121920

121,920 is an even composite number composed of four prime numbers multiplied together.

What does the number 121920 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 56 divisors.

121920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of fifty-six divisors.

Prime factorization of 121920:

2⁶ × 3 × 5 × 127

(2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 127)

See below for interesting mathematical facts about the number 121920 from the Numbermatics database.

Names of 121920

Cardinal: 121920 can be written as One hundred twenty-one thousand, nine hundred twenty.

Scientific notation

Scientific notation: 1.2192 × 10⁵

Factors of 121920

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 9
Sum of prime factors: 137

Divisors of 121920

Number of divisors d(n): 56
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 127 160 192 240 254 320 381 480 508 635 762 960 1016 1270 1524 1905 2032 2540 3048 3810 4064 5080 6096 7620 8128 10160 12192 15240 20320 24384 30480 40640 60960 121920
Sum of all divisors σ(n): 390144
Sum of proper divisors (its aliquot sum) s(n): 268224
121920 is an abundant number, because the sum of its proper divisors (268224) is greater than itself. Its abundance is 146304

Bases of 121920

Binary: 11101110001000000₂
Hexadecimal: 0x1DC40
Base-36: 2M2O

Squares and roots of 121920

121920 squared (121920²) is 14864486400
121920 cubed (121920³) is 1812278181888000
The square root of 121920 is 349.1704454847
The cube root of 121920 is 49.5859134469

Scales and comparisons

How big is 121920?

121,920 seconds is equal to 1 day, 9 hours, 52 minutes.
To count from 1 to 121,920 would take you about nine 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 121920 cubic inches would be around 4.1 feet tall.

Recreational maths with 121920

121920 backwards is 029121
121920 is a Harshad number.
The number of decimal digits it has is: 6
The sum of 121920's digits is 15
More coming soon!

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The information we have on file for 121920 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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