142915890

Names of 142915890

• Cardinal: 142915890 can be written as One hundred forty-two million, nine hundred fifteen thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 1.4291589 × 10⁸

Factors of 142915890

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 11875

Divisors of 142915890

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 10 13 15 26 30 31 39 62 65 78 93 130 155 186 195 310 390 403 465 806 930 1209 2015 2418 4030 6045 11821 12090 23642 35463 59105 70926 118210 153673 177315 307346 354630 366451 461019 732902 768365 922038 1099353 1536730 1832255 2198706 2305095 3664510 4610190 4763863 5496765 9527726 10993530 14291589 23819315 28583178 47638630 71457945 142915890
• Sum of all divisors σ(n): 381330432
• Sum of proper divisors (its aliquot sum) s(n): 238414542
• 142915890 is an abundant number, because the sum of its proper divisors (238414542) is greater than itself. Its abundance is 95498652

Bases of 142915890

• Binary: 1000100001001011100100110010₂
• Hexadecimal: 0x884B932
• Base-36: 2D36LU

Squares and roots of 142915890

• 142915890 squared (142915890²) is 20424951614492100
• 142915890 cubed (142915890³) is 2919050138192075369469000
• The square root of 142915890 is 11954.7434100443
• The cube root of 142915890 is 522.8296066727

Scales and comparisons

• 142,915,890 seconds is equal to 4 years, 28 weeks, 2 days, 2 hours, 51 minutes, 30 seconds.
• To count from 1 to 142,915,890 would take you about six 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 142915890 cubic inches would be around 43.6 feet tall.

Recreational maths with 142915890

• 142915890 backwards is 098519241
• 142915890 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 142915890's digits is 39
• More coming soon!