142921728

Names of 142921728

• Cardinal: 142921728 can be written as One hundred forty-two million, nine hundred twenty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.42921728 × 10⁸

Factors of 142921728

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 3882

Divisors of 142921728

• Number of divisors d(n): 78
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 256 288 384 512 576 768 1024 1152 1536 2048 2304 3072 3877 4096 4608 6144 7754 9216 11631 12288 15508 18432 23262 31016 34893 36864 46524 62032 69786 93048 124064 139572 186096 248128 279144 372192 496256 558288 744384 992512 1116576 1488768 1985024 2233152 2977536 3970048 4466304 5955072 7940096 8932608 11910144 15880192 17865216 23820288 35730432 47640576 71460864 142921728
• Sum of all divisors σ(n): 412941074
• Sum of proper divisors (its aliquot sum) s(n): 270019346
• 142921728 is an abundant number, because the sum of its proper divisors (270019346) is greater than itself. Its abundance is 127097618

Bases of 142921728

• Binary: 1000100001001101000000000000₂
• Hexadecimal: 0x884D000
• Base-36: 2D3B40

Squares and roots of 142921728

• 142921728 squared (142921728²) is 20426620334505984
• 142921728 cubed (142921728³) is 2919407875407533259620352
• The square root of 142921728 is 11954.9875784127
• The cube root of 142921728 is 522.8367256331

Scales and comparisons

• 142,921,728 seconds is equal to 4 years, 28 weeks, 2 days, 4 hours, 28 minutes, 48 seconds.
• To count from 1 to 142,921,728 would take you about six 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 142921728 cubic inches would be around 43.6 feet tall.

Recreational maths with 142921728

• 142921728 backwards is 827129241
• 142921728 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 142921728's digits is 36
• More coming soon!