42139818

Names of 42139818

• Cardinal: 42139818 can be written as Forty-two million, one hundred thirty-nine thousand, eight hundred eighteen.

Scientific notation

• Scientific notation: 4.2139818 × 10⁷

Factors of 42139818

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 203

Divisors of 42139818

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 23 27 37 42 46 54 63 69 74 111 126 131 138 161 189 207 222 259 262 322 333 378 393 414 483 518 621 666 777 786 851 917 966 999 1179 1242 1449 1554 1702 1834 1998 2331 2358 2553 2751 2898 3013 3537 4347 4662 4847 5106 5502 5957 6026 6993 7074 7659 8253 8694 9039 9694 11914 13986 14541 15318 16506 17871 18078 21091 22977 24759 27117 29082 33929 35742 42182 43623 45954 49518 53613 54234 63273 67858 81351 87246 101787 107226 111481 126546 130869 160839 162702 189819 203574 222962 261738 305361 321678 334443 379638 569457 610722 668886 780367 916083 1003329 1138914 1560734 1832166 2006658 2341101 3009987 4682202 6019974 7023303 14046606 21069909 42139818
• Sum of all divisors σ(n): 115568640
• Sum of proper divisors (its aliquot sum) s(n): 73428822
• 42139818 is an abundant number, because the sum of its proper divisors (73428822) is greater than itself. Its abundance is 31289004

Bases of 42139818

• Binary: 10100000110000000010101010₂
• Hexadecimal: 0x28300AA
• Base-36: P37AI

Squares and roots of 42139818

• 42139818 squared (42139818²) is 1775764261073124
• 42139818 cubed (42139818³) is 74830382772525930051432
• The square root of 42139818 is 6491.5189285713
• The cube root of 42139818 is 347.9879603445

Scales and comparisons

• 42,139,818 seconds is equal to 1 year, 17 weeks, 4 days, 17 hours, 30 minutes, 18 seconds.
• To count from 1 to 42,139,818 would take you about two 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 42139818 cubic inches would be around 29 feet tall.

Recreational maths with 42139818

• 42139818 backwards is 81893124
• The number of decimal digits it has is: 8
• The sum of 42139818's digits is 36
• More coming soon!