129921

129,921 is an odd composite number composed of four prime numbers multiplied together.

What does the number 129921 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

129921 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 129921:

3 × 11 × 31 × 127

See below for interesting mathematical facts about the number 129921 from the Numbermatics database.

Names of 129921

Cardinal: 129921 can be written as One hundred twenty-nine thousand, nine hundred twenty-one.

Scientific notation

Scientific notation: 1.29921 × 10⁵

Factors of 129921

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 172

Divisors of 129921

Number of divisors d(n): 16
Complete list of divisors:
1 3 11 31 33 93 127 341 381 1023 1397 3937 4191 11811 43307 129921
Sum of all divisors σ(n): 196608
Sum of proper divisors (its aliquot sum) s(n): 66687
129921 is a deficient number, because the sum of its proper divisors (66687) is less than itself. Its deficiency is 63234

Bases of 129921

Binary: 11111101110000001₂
Hexadecimal: 0x1FB81
Base-36: 2S8X

Squares and roots of 129921

129921 squared (129921²) is 16879466241
129921 cubed (129921³) is 2192997133496961
The square root of 129921 is 360.4455576089
The cube root of 129921 is 50.6477066255

Scales and comparisons

How big is 129921?

129,921 seconds is equal to 1 day, 12 hours, 5 minutes, 21 seconds.
To count from 1 to 129,921 would take you about twelve 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 129921 cubic inches would be around 4.2 feet tall.

Recreational maths with 129921

129921 is the same when its digits are reversed! That makes it a palindromic number.
The number of decimal digits it has is: 6
The sum of 129921's digits is 24
More coming soon!

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The information we have on file for 129921 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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