42139440

Names of 42139440

• Cardinal: 42139440 can be written as Forty-two million, one hundred thirty-nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 4.213944 × 10⁷

Factors of 42139440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 946

Divisors of 42139440

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 35 36 40 42 45 48 54 56 60 63 70 72 80 81 84 90 105 108 112 120 126 135 140 144 162 168 180 189 210 216 240 252 270 280 315 324 336 360 378 405 420 432 504 540 560 567 630 648 720 756 810 840 929 945 1008 1080 1134 1260 1296 1512 1620 1680 1858 1890 2160 2268 2520 2787 2835 3024 3240 3716 3780 4536 4645 5040 5574 5670 6480 6503 7432 7560 8361 9072 9290 11148 11340 13006 13935 14864 15120 16722 18580 19509 22296 22680 25083 26012 27870 32515 33444 37160 39018 41805 44592 45360 50166 52024 55740 58527 65030 66888 74320 75249 78036 83610 97545 100332 104048 111480 117054 125415 130060 133776 150498 156072 167220 175581 195090 200664 222960 234108 250830 260120 292635 300996 312144 334440 351162 376245 390180 401328 468216 501660 520240 526743 585270 601992 668880 702324 752490 780360 877905 936432 1003320 1053486 1170540 1203984 1404648 1504980 1560720 1755810 2006640 2106972 2341080 2633715 2809296 3009960 3511620 4213944 4682160 5267430 6019920 7023240 8427888 10534860 14046480 21069720 42139440
• Sum of all divisors σ(n): 167444640
• Sum of proper divisors (its aliquot sum) s(n): 125305200
• 42139440 is an abundant number, because the sum of its proper divisors (125305200) is greater than itself. Its abundance is 83165760

Bases of 42139440

• Binary: 10100000101111111100110000₂
• Hexadecimal: 0x282FF30
• Base-36: P3700

Squares and roots of 42139440

• 42139440 squared (42139440²) is 1775732403513600
• 42139440 cubed (42139440³) is 74828369073917136384000
• The square root of 42139440 is 6491.4898135945
• The cube root of 42139440 is 347.9869198413

Scales and comparisons

• 42,139,440 seconds is equal to 1 year, 17 weeks, 4 days, 17 hours, 24 minutes.
• To count from 1 to 42,139,440 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 42139440 cubic inches would be around 29 feet tall.

Recreational maths with 42139440

• 42139440 backwards is 04493124
• 42139440 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 42139440's digits is 27
• More coming soon!