42391945

Names of 42391945

• Cardinal: 42391945 can be written as Forty-two million, three hundred ninety-one thousand, nine hundred forty-five.

Scientific notation

• Scientific notation: 4.2391945 × 10⁷

Factors of 42391945

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 446255

Divisors of 42391945

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 19 95 446231 2231155 8478389 42391945
• Sum of all divisors σ(n): 53547840
• Sum of proper divisors (its aliquot sum) s(n): 11155895
• 42391945 is a deficient number, because the sum of its proper divisors (11155895) is less than itself. Its deficiency is 31236050

Bases of 42391945

• Binary: 10100001101101100110001001₂
• Hexadecimal: 0x286D989
• Base-36: P8LU1

Squares and roots of 42391945

• 42391945 squared (42391945²) is 1797077000883025
• 42391945 cubed (42391945³) is 76181589382198147233625
• The square root of 42391945 is 6510.9096906653
• The cube root of 42391945 is 348.6805970929

Scales and comparisons

• 42,391,945 seconds is equal to 1 year, 18 weeks, 15 hours, 32 minutes, 25 seconds.
• To count from 1 to 42,391,945 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 42391945 cubic inches would be around 29.1 feet tall.

Recreational maths with 42391945

• 42391945 backwards is 54919324
• The number of decimal digits it has is: 8
• The sum of 42391945's digits is 37
• More coming soon!