42051990

Names of 42051990

• Cardinal: 42051990 can be written as Forty-two million, fifty-one thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 4.205199 × 10⁷

Factors of 42051990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 9444

Divisors of 42051990

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 5 6 10 15 30 151 302 453 755 906 1510 2265 4530 9283 18566 27849 46415 55698 92830 139245 278490 1401733 2803466 4205199 7008665 8410398 14017330 21025995 42051990
• Sum of all divisors σ(n): 101604096
• Sum of proper divisors (its aliquot sum) s(n): 59552106
• 42051990 is an abundant number, because the sum of its proper divisors (59552106) is greater than itself. Its abundance is 17500116

Bases of 42051990

• Binary: 10100000011010100110010110₂
• Hexadecimal: 0x281A996
• Base-36: P1BIU

Squares and roots of 42051990

• 42051990 squared (42051990²) is 1768369862960100
• 42051990 cubed (42051990³) is 74363471793499495599000
• The square root of 42051990 is 6484.7505734607
• The cube root of 42051990 is 347.7460328289

Scales and comparisons

• 42,051,990 seconds is equal to 1 year, 17 weeks, 3 days, 17 hours, 6 minutes, 30 seconds.
• To count from 1 to 42,051,990 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 42051990 cubic inches would be around 29 feet tall.

Recreational maths with 42051990

• 42051990 backwards is 09915024
• 42051990 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 42051990's digits is 30
• More coming soon!