12749538942

Names of 12749538942

• Cardinal: 12749538942 can be written as Twelve billion, seven hundred forty-nine million, five hundred thirty-eight thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 1.2749538942 × 10¹⁰

Factors of 12749538942

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 10837

Divisors of 12749538942

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 42 47 54 63 67 94 126 134 141 189 201 282 329 378 402 423 469 603 658 846 938 987 1206 1269 1407 1809 1974 2538 2814 2961 3149 3618 4221 5922 6298 8442 8883 9447 10711 12663 17766 18894 21422 22043 25326 28341 32133 44086 56682 64266 66129 74977 85023 96399 132258 149954 170046 192798 198387 224931 289197 396774 449862 503417 578394 595161 674793 717637 1006834 1190322 1349586 1435274 1510251 2024379 2152911 3020502 3523919 4048758 4305822 4530753 5023459 6458733 7047838 9061506 10046918 10571757 12917466 13592259 15070377 19376199 21143514 27184518 30140754 31715271 33728939 38752398 45211131 63430542 67457878 90422262 95145813 101186817 135633393 190291626 202373634 236102573 271266786 303560451 472205146 607120902 708307719 910681353 1416615438 1821362706 2124923157 4249846314 6374769471 12749538942
• Sum of all divisors σ(n): 33565409280
• Sum of proper divisors (its aliquot sum) s(n): 20815870338
• 12749538942 is an abundant number, because the sum of its proper divisors (20815870338) is greater than itself. Its abundance is 8066331396

Bases of 12749538942

• Binary: 1011110111111011101000011001111110₂
• Hexadecimal: 0x2F7EE867E
• Base-36: 5UUQV7I

Squares and roots of 12749538942

• 12749538942 squared (12749538942²) is 162550743233574479364
• 12749538942 cubed (12749538942³) is 2072447030907500826508693392888
• The square root of 12749538942 is 112913.8562887655
• The cube root of 12749538942 is 2336.1362041711

Scales and comparisons

• 12,749,538,942 seconds is equal to 405 years, 20 weeks, 4 days, 2 hours, 35 minutes, 42 seconds.
• To count from 1 to 12,749,538,942 would take you about eight hundred ten 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 12749538942 cubic inches would be around 194.7 feet tall.

Recreational maths with 12749538942

• 12749538942 backwards is 24983594721
• 12749538942 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12749538942's digits is 54
• More coming soon!