The Number

216742

Two Hundred and Sixteen Thousand Seven Hundred and Forty-Two

In Base 21 Unovigesimal Is

128a121

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See Two Hundred and Sixteen Thousand Seven Hundred and Forty-Two in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

216739
1289j21
Two Hundred and Sixteen Thousand Seven Hundred and Thirty-Nine in Base 21 Unovigesimal
216740
1289k21
Two Hundred and Sixteen Thousand Seven Hundred and Forty in Base 21 Unovigesimal
216741
128a021
Two Hundred and Sixteen Thousand Seven Hundred and Forty-One in Base 21 Unovigesimal
216743
128a221
Two Hundred and Sixteen Thousand Seven Hundred and Forty-Three in Base 21 Unovigesimal
216744
128a321
Two Hundred and Sixteen Thousand Seven Hundred and Forty-Four in Base 21 Unovigesimal
216745
128a421
Two Hundred and Sixteen Thousand Seven Hundred and Forty-Five in Base 21 Unovigesimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

2.16742e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0000iheh7fc7fii521

The reciprocal of 216742 in Base 21 Unovigesimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 128a121 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Two hundred and sixteen thousand seven hundred and forty-two is a composite number with 8 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Two hundred and sixteen thousand seven hundred and forty-two is a composite number with 8 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number two hundred and sixteen thousand seven hundred and forty-two has the following 3 prime factors:

2
221
Two in Base 21 Unovigesimal
307
ed21
Three Hundred and Seven in Base 21 Unovigesimal
353
gh21
Three Hundred and Fifty-Three in Base 21 Unovigesimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

2211 · ed211 · gh211 = 128a121

Base Conversions

The number two hundred and sixteen thousand seven hundred and forty-two in 35 different bases