42128154887

Names of 42128154887

• Cardinal: 42128154887 can be written as Forty-two billion, one hundred twenty-eight million, one hundred fifty-four thousand, eight hundred eighty-seven.

Scientific notation

• Scientific notation: 4.2128154887 × 10¹⁰

Factors of 42128154887

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 67

Divisors of 42128154887

• Number of divisors d(n): 60
• Complete list of divisors:
  1 7 13 47 49 91 169 329 343 611 637 1183 2209 2303 2401 4277 4459 7943 8281 15463 16121 28717 29939 31213 55601 57967 103823 108241 112847 201019 209573 373321 389207 405769 726761 757687 1349699 1407133 1467011 2613247 2724449 5087327 5303809 9447893 9849931 17546087 18292729 19071143 35611289 66135251 68949517 122822609 128049103 249279023 462946757 859758263 896343721 3240627299 6018307841 42128154887
• Sum of all divisors σ(n): 54374804640
• Sum of proper divisors (its aliquot sum) s(n): 12246649753
• 42128154887 is a deficient number, because the sum of its proper divisors (12246649753) is less than itself. Its deficiency is 29881505134

Bases of 42128154887

• Binary: 100111001111000010001010000100000111₂
• Hexadecimal: 0x9CF08A107
• Base-36: JCQ0KCN

Squares and roots of 42128154887

• 42128154887 squared (42128154887²) is 1774781434183061982769
• 42128154887 cubed (42128154887³) is 74768267149836031522013757142103
• The square root of 42128154887 is 205251.4430814069
• The cube root of 42128154887 is 3479.5585296485

Scales and comparisons

• 42,128,154,887 seconds is equal to 1,339 years, 28 weeks, 2 days, 9 hours, 14 minutes, 47 seconds.
• To count from 1 to 42,128,154,887 would take you about two thousand, six hundred seventy-nine 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 42128154887 cubic inches would be around 290 feet tall.

Recreational maths with 42128154887

• 42128154887 backwards is 78845182124
• The number of decimal digits it has is: 11
• The sum of 42128154887's digits is 50
• More coming soon!