123030138

Names of 123030138

• Cardinal: 123030138 can be written as One hundred twenty-three million, thirty thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 1.23030138 × 10⁸

Factors of 123030138

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 629

Divisors of 123030138

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 7 11 14 21 22 33 42 43 66 77 86 121 129 154 231 242 258 301 363 462 473 563 602 726 847 903 946 1126 1419 1689 1694 1806 2541 2838 3311 3378 3941 5082 5203 6193 6622 7882 9933 10406 11823 12386 15609 18579 19866 23646 24209 31218 36421 37158 43351 48418 68123 72627 72842 86702 109263 130053 136246 145254 169463 204369 218526 260106 266299 338926 408738 476861 508389 532598 798897 953722 1016778 1430583 1597794 1864093 2861166 2929289 3728186 5592279 5858578 8787867 11184558 17575734 20505023 41010046 61515069 123030138
• Sum of all divisors σ(n): 316850688
• Sum of proper divisors (its aliquot sum) s(n): 193820550
• 123030138 is an abundant number, because the sum of its proper divisors (193820550) is greater than itself. Its abundance is 70790412

Bases of 123030138

• Binary: 111010101010100101001111010₂
• Hexadecimal: 0x7554A7A
• Base-36: 218YNU

Squares and roots of 123030138

• 123030138 squared (123030138²) is 15136414856299044
• 123030138 cubed (123030138³) is 1862235208595721552588072
• The square root of 123030138 is 11091.8951491619
• The cube root of 123030138 is 497.3595984367

Scales and comparisons

• 123,030,138 seconds is equal to 3 years, 47 weeks, 2 days, 23 hours, 2 minutes, 18 seconds.
• To count from 1 to 123,030,138 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 123030138 cubic inches would be around 41.4 feet tall.

Recreational maths with 123030138

• 123030138 backwards is 831030321
• 123030138 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 123030138's digits is 21
• More coming soon!