642188134

Names of 642188134

• Cardinal: 642188134 can be written as Six hundred forty-two million, one hundred eighty-eight thousand, one hundred thirty-four.

Scientific notation

• Scientific notation: 6.42188134 × 10⁸

Factors of 642188134

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 13779

Divisors of 642188134

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 7 14 5647 8123 11294 16246 39529 56861 79058 113722 45870581 91741162 321094067 642188134
• Sum of all divisors σ(n): 1101224448
• Sum of proper divisors (its aliquot sum) s(n): 459036314
• 642188134 is a deficient number, because the sum of its proper divisors (459036314) is less than itself. Its deficiency is 183151820

Bases of 642188134

• Binary: 100110010001110000001101100110₂
• Hexadecimal: 0x26470366
• Base-36: AMCBJA

Squares and roots of 642188134

• 642188134 squared (642188134²) is 412405599450401956
• 642188134 cubed (642188134³) is 264841982362205057673590104
• The square root of 642188134 is 25341.4311750541
• The cube root of 642188134 is 862.7548821449

Scales and comparisons

• 642,188,134 seconds is equal to 20 years, 21 weeks, 5 days, 17 hours, 35 minutes, 34 seconds.
• To count from 1 to 642,188,134 would take you about thirty 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 642188134 cubic inches would be around 71.9 feet tall.

Recreational maths with 642188134

• 642188134 backwards is 431881246
• The number of decimal digits it has is: 9
• The sum of 642188134's digits is 37
• More coming soon!