42145681

Names of 42145681

• Cardinal: 42145681 can be written as Forty-two million, one hundred forty-five thousand, six hundred eighty-one.

Scientific notation

• Scientific notation: 4.2145681 × 10⁷

Factors of 42145681

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 17518

Divisors of 42145681

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2879 14639 42145681
• Sum of all divisors σ(n): 42163200
• Sum of proper divisors (its aliquot sum) s(n): 17519
• 42145681 is a deficient number, because the sum of its proper divisors (17519) is less than itself. Its deficiency is 42128162

Bases of 42145681

• Binary: 10100000110001011110010001₂
• Hexadecimal: 0x2831791
• Base-36: P3BTD

Squares and roots of 42145681

• 42145681 squared (42145681²) is 1776258426953761
• 42145681 cubed (42145681³) is 74861621035955012856241
• The square root of 42145681 is 6491.9705020895
• The cube root of 42145681 is 348.0040983575

Scales and comparisons

• 42,145,681 seconds is equal to 1 year, 17 weeks, 4 days, 19 hours, 8 minutes, 1 second.
• To count from 1 to 42,145,681 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 42145681 cubic inches would be around 29 feet tall.

Recreational maths with 42145681

• 42145681 backwards is 18654124
• The number of decimal digits it has is: 8
• The sum of 42145681's digits is 31
• More coming soon!