123921

123,921 is an odd composite number composed of three prime numbers multiplied together.

What does the number 123921 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 18 divisors.

123921 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighteen divisors.

Prime factorization of 123921:

3² × 7² × 281

(3 × 3 × 7 × 7 × 281)

See below for interesting mathematical facts about the number 123921 from the Numbermatics database.

Names of 123921

Cardinal: 123921 can be written as One hundred twenty-three thousand, nine hundred twenty-one.

Scientific notation

Scientific notation: 1.23921 × 10⁵

Factors of 123921

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 5
Sum of prime factors: 291

Divisors of 123921

Number of divisors d(n): 18
Complete list of divisors:
1 3 7 9 21 49 63 147 281 441 843 1967 2529 5901 13769 17703 41307 123921
Sum of all divisors σ(n): 208962
Sum of proper divisors (its aliquot sum) s(n): 85041
123921 is a deficient number, because the sum of its proper divisors (85041) is less than itself. Its deficiency is 38880

Bases of 123921

Binary: 11110010000010001₂
Hexadecimal: 0x1E411
Base-36: 2NM9

Squares and roots of 123921

123921 squared (123921²) is 15356414241
123921 cubed (123921³) is 1902982209158961
The square root of 123921 is 352.0241468991
The cube root of 123921 is 49.8557173843

Scales and comparisons

How big is 123921?

123,921 seconds is equal to 1 day, 10 hours, 25 minutes, 21 seconds.
To count from 1 to 123,921 would take you about ten 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 123921 cubic inches would be around 4.2 feet tall.

Recreational maths with 123921

123921 backwards is 129321
The number of decimal digits it has is: 6
The sum of 123921's digits is 18
More coming soon!

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The information we have on file for 123921 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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