121521920
121,521,920 is an even composite number composed of five prime numbers multiplied together.
121521920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 121521920:
28 × 5 × 13 × 67 × 109
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 13 × 67 × 109)See below for interesting mathematical facts about the number 121521920 from the Numbermatics database.
Names of 121521920
- Cardinal: 121521920 can be written as One hundred twenty-one million, five hundred twenty-one thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.2152192 × 108
Factors of 121521920
Divisors of 121521920
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 67 80 104 109 128 130 134 160 208 218 256 260 268 320 335 416 436 520 536 545 640 670 832 871 872 1040 1072 1090 1280 1340 1417 1664 1742 1744 2080 2144 2180 2680 2834 3328 3484 3488 4160 4288 4355 4360 5360 5668 6968 6976 7085 7303 8320 8576 8710 8720 10720 11336 13936 13952 14170 14606 16640 17152 17420 17440 21440 22672 27872 27904 28340 29212 34840 34880 36515 42880 45344 55744 56680 58424 69680 69760 73030 85760 90688 94939 111488 113360 116848 139360 139520 146060 181376 189878 222976 226720 233696 278720 292120 362752 379756 453440 467392 474695 557440 584240 759512 906880 934784 949390 1114880 1168480 1519024 1813760 1869568 1898780 2336960 3038048 3797560 4673920 6076096 7595120 9347840 12152192 15190240 24304384 30380480 60760960 121521920
- Sum of all divisors σ(n): 321071520
- Sum of proper divisors (its aliquot sum) s(n): 199549600
- 121521920 is an abundant number, because the sum of its proper divisors (199549600) is greater than itself. Its abundance is 78027680
Bases of 121521920
- Binary: 1110011111001000111000000002
- Hexadecimal: 0x73E4700
- Base-36: 20CMWW
Squares and roots of 121521920
- 121521920 squared (1215219202) is 14767577040486400
- 121521920 cubed (1215219203) is 1794584315707825061888000
-
The
square root of 121521920 is 11023.6981090739 -
The
cube root of 121521920 is 495.3188708293
Scales and comparisons
How big is 121521920?- 121,521,920 seconds is equal to 3 years, 44 weeks, 6 days, 12 hours, 5 minutes, 20 seconds.
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To count from 1 to 121,521,920 would take you about five years!
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 121521920 cubic inches would be around 41.3 feet tall.
Recreational maths with 121521920
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