The Number

640242

Six Hundred and Forty Thousand Two Hundred and Forty-Two

In Base 31 Untrigesimal Is

lf6u31

The numbers with a 31 subscript use Base 31 Untrigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

640239
lf6r31
Six Hundred and Forty Thousand Two Hundred and Thirty-Nine in Base 31 Untrigesimal
640240
lf6s31
Six Hundred and Forty Thousand Two Hundred and Forty in Base 31 Untrigesimal
640241
lf6t31
Six Hundred and Forty Thousand Two Hundred and Forty-One in Base 31 Untrigesimal
640243
lf7031
Six Hundred and Forty Thousand Two Hundred and Forty-Three in Base 31 Untrigesimal
640244
lf7131
Six Hundred and Forty Thousand Two Hundred and Forty-Four in Base 31 Untrigesimal
640245
lf7231
Six Hundred and Forty Thousand Two Hundred and Forty-Five in Base 31 Untrigesimal

Scientific Notation

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

6.40242e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0001dm66gechur631

The reciprocal of 640242 in Base 31 Untrigesimal.

Palindrome?

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

The number lf6u31 is not a palindrome.

Not A Prime Number

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

Six hundred and forty thousand two hundred and forty-two is a composite number with 12 total factors (including 1 and itself).   See primes in Base 31 Untrigesimal

A Composite

Composites have more than just these two factors.

Six hundred and forty thousand two hundred and forty-two is a composite number with 12 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 six hundred and forty thousand two hundred and forty-two has the following 3 prime factors:

2
231
Two in Base 31 Untrigesimal
3
331
Three in Base 31 Untrigesimal
35569
160c31
Thirty-Five Thousand Five Hundred and Sixty-Nine in Base 31 Untrigesimal

Prime Factorization

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

2311 · 3312 · 160c311 = lf6u31

Base Conversions

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