The Number

21542

Twenty-One Thousand Five Hundred and Forty-Two

In Base 4 Quaternary Is

111002124

The numbers with a 4 subscript use Base 4 Quaternary notation.

For more familiar numbers: See Twenty-One Thousand Five Hundred and Forty-Two in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

21539
111002034
Twenty-One Thousand Five Hundred and Thirty-Nine in Base 4 Quaternary
21540
111002104
Twenty-One Thousand Five Hundred and Forty in Base 4 Quaternary
21541
111002114
Twenty-One Thousand Five Hundred and Forty-One in Base 4 Quaternary
21543
111002134
Twenty-One Thousand Five Hundred and Forty-Three in Base 4 Quaternary
21544
111002204
Twenty-One Thousand Five Hundred and Forty-Four in Base 4 Quaternary
21545
111002214
Twenty-One Thousand Five Hundred and Forty-Five in Base 4 Quaternary

Scientific Notation

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

2.1542e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000000030022310013003301132212014

The reciprocal of 21542 in Base 4 Quaternary.

Palindrome?

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

The number 111002124 is not a palindrome.

Not A Prime Number

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

Twenty-one thousand five hundred and forty-two is a composite number with 4 total factors (including 1 and itself).   See primes in Base 4 Quaternary

A Composite

Composites have more than just these two factors.

Twenty-one thousand five hundred and forty-two is a composite number with 4 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 twenty-one thousand five hundred and forty-two has the following 2 prime factors:

2
24
Two in Base 4 Quaternary
10771
22201034
Ten Thousand Seven Hundred and Seventy-One in Base 4 Quaternary

Prime Factorization

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

241 · 222010341 = 111002124

Base Conversions

The number twenty-one thousand five hundred and forty-two in 35 different bases