The Number

21842

Twenty-One Thousand Eight Hundred and Forty-Two

In Base 8 Octal Is

525228

The numbers with a 8 subscript use Base 8 Octal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

21839
525178
Twenty-One Thousand Eight Hundred and Thirty-Nine in Base 8 Octal
21840
525208
Twenty-One Thousand Eight Hundred and Forty in Base 8 Octal
21841
525218
Twenty-One Thousand Eight Hundred and Forty-One in Base 8 Octal
21843
525238
Twenty-One Thousand Eight Hundred and Forty-Three in Base 8 Octal
21844
525248
Twenty-One Thousand Eight Hundred and Forty-Four in Base 8 Octal
21845
525258
Twenty-One Thousand Eight Hundred and Forty-Five in Base 8 Octal

Scientific Notation

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

2.1842e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00001400074004540273428

The reciprocal of 21842 in Base 8 Octal.

Palindrome?

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

The number 525228 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 eight hundred and forty-two is a composite number with 8 total factors (including 1 and itself).   See primes in Base 8 Octal

A Composite

Composites have more than just these two factors.

Twenty-one thousand eight 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 twenty-one thousand eight hundred and forty-two has the following 3 prime factors:

2
28
Two in Base 8 Octal
67
1038
Sixty-Seven in Base 8 Octal
163
2438
One Hundred and Sixty-Three in Base 8 Octal

Prime Factorization

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

281 · 10381 · 24381 = 525228

Base Conversions

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