21423

21,423 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21423 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

21423 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 21423:

3 × 37 × 193

See below for interesting mathematical facts about the number 21423 from the Numbermatics database.

Names of 21423

Cardinal: 21423 can be written as Twenty-one thousand, four hundred twenty-three.

Scientific notation

Scientific notation: 2.1423 × 10⁴

Factors of 21423

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 3
Sum of prime factors: 233

Divisors of 21423

Number of divisors d(n): 8
Complete list of divisors:
1 3 37 111 193 579 7141 21423
Sum of all divisors σ(n): 29488
Sum of proper divisors (its aliquot sum) s(n): 8065
21423 is a deficient number, because the sum of its proper divisors (8065) is less than itself. Its deficiency is 13358

Bases of 21423

Binary: 101001110101111₂
Hexadecimal: 0x53AF
Base-36: GJ3

Squares and roots of 21423

21423 squared (21423²) is 458944929
21423 cubed (21423³) is 9831977213967
The square root of 21423 is 146.3659796537
The cube root of 21423 is 27.7732537817

Scales and comparisons

How big is 21423?

21,423 seconds is equal to 5 hours, 57 minutes, 3 seconds.
To count from 1 to 21,423 would take you about five hours.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 21423 cubic inches would be around 2.3 feet tall.

Recreational maths with 21423

21423 backwards is 32412
The number of decimal digits it has is: 5
The sum of 21423's digits is 12
More coming soon!

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The information we have on file for 21423 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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