12721647942

Names of 12721647942

• Cardinal: 12721647942 can be written as Twelve billion, seven hundred twenty-one million, six hundred forty-seven thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 1.2721647942 × 10¹⁰

Factors of 12721647942

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 131

Divisors of 12721647942

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 6 9 18 19 27 38 54 57 81 107 114 162 171 214 321 342 361 513 642 722 963 1026 1083 1539 1926 2033 2166 2889 3078 3249 4066 5778 6099 6498 6859 8667 9747 11449 12198 13718 17334 18297 19494 20577 22898 29241 34347 36594 38627 41154 54891 58482 61731 68694 77254 103041 109782 115881 123462 164673 185193 206082 217531 231762 309123 329346 347643 370386 435062 555579 618246 652593 695286 733913 927369 1042929 1111158 1305186 1467826 1854738 1957779 2085858 2201739 3128787 3915558 4133089 4403478 5873337 6257574 6605217 8266178 11746674 12399267 13210434 17620011 19815651 24798534 35240022 37197801 39631302 59446953 74395602 78528691 111593403 118893906 157057382 223186806 235586073 334780209 471172146 669560418 706758219 1413516438 2120274657 4240549314 6360823971 12721647942
• Sum of all divisors σ(n): 30373182840
• Sum of proper divisors (its aliquot sum) s(n): 17651534898
• 12721647942 is an abundant number, because the sum of its proper divisors (17651534898) is greater than itself. Its abundance is 4929886956

Bases of 12721647942

• Binary: 1011110110010001001111000101000110₂
• Hexadecimal: 0x2F644F146
• Base-36: 5UE52DI

Squares and roots of 12721647942

• 12721647942 squared (12721647942²) is 161840326360192835364
• 12721647942 cubed (12721647942³) is 2058875654772755534731575420888
• The square root of 12721647942 is 112790.2830123233
• The cube root of 12721647942 is 2334.4314432959

Scales and comparisons

• 12,721,647,942 seconds is equal to 404 years, 26 weeks, 3 days, 7 hours, 5 minutes, 42 seconds.
• To count from 1 to 12,721,647,942 would take you about eight hundred nine 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 12721647942 cubic inches would be around 194.5 feet tall.

Recreational maths with 12721647942

• 12721647942 backwards is 24974612721
• The number of decimal digits it has is: 11
• The sum of 12721647942's digits is 45
• More coming soon!