12942750821

Names of 12942750821

• Cardinal: 12942750821 can be written as Twelve billion, nine hundred forty-two million, seven hundred fifty thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.2942750821 × 10¹⁰

Factors of 12942750821

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1354

Divisors of 12942750821

• Number of divisors d(n): 64
• Complete list of divisors:
  1 7 11 13 31 77 91 143 217 341 403 631 661 1001 2387 2821 4417 4433 4627 6941 7271 8203 8593 19561 20491 31031 48587 50897 57421 60151 90233 94523 136927 143437 215171 225401 254293 266383 417091 631631 661661 1506197 1577807 1780051 1864681 2797223 2919637 2930213 4588001 5422183 12929821 19580561 20511491 32116007 37955281 59644013 90508747 142228031 168087673 417508091 995596217 1176613711 1848964403 12942750821
• Sum of all divisors σ(n): 17993859072
• Sum of proper divisors (its aliquot sum) s(n): 5051108251
• 12942750821 is a deficient number, because the sum of its proper divisors (5051108251) is less than itself. Its deficiency is 7891642570

Bases of 12942750821

• Binary: 1100000011011100101011010001100101₂
• Hexadecimal: 0x30372B465
• Base-36: 5Y1S2G5

Squares and roots of 12942750821

• 12942750821 squared (12942750821²) is 167514798814496174041
• 12942750821 cubed (12942750821³) is 2168102299885970183270511637661
• The square root of 12942750821 is 113766.2112448155
• The cube root of 12942750821 is 2347.8780193633

Scales and comparisons

• 12,942,750,821 seconds is equal to 411 years, 28 weeks, 8 hours, 33 minutes, 41 seconds.
• To count from 1 to 12,942,750,821 would take you about eight hundred twenty-three 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 12942750821 cubic inches would be around 195.7 feet tall.

Recreational maths with 12942750821

• 12942750821 backwards is 12805724921
• The number of decimal digits it has is: 11
• The sum of 12942750821's digits is 41
• More coming soon!