42740

Names of 42740

• Cardinal: 42740 can be written as Forty-two thousand, seven hundred forty.

Scientific notation

• Scientific notation: 4.274 × 10⁴

Factors of 42740

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 2144

Divisors of 42740

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 4 5 10 20 2137 4274 8548 10685 21370 42740
• Sum of all divisors σ(n): 89796
• Sum of proper divisors (its aliquot sum) s(n): 47056
• 42740 is an abundant number, because the sum of its proper divisors (47056) is greater than itself. Its abundance is 4316

Bases of 42740

• Binary: 1010011011110100₂
• Hexadecimal: 0xA6F4
• Base-36: WZ8

Squares and roots of 42740

• 42740 squared (42740²) is 1826707600
• 42740 cubed (42740³) is 78073482824000
• The square root of 42740 is 206.7365473253
• The cube root of 42740 is 34.9632266831

Scales and comparisons

• 42,740 seconds is equal to 11 hours, 52 minutes, 20 seconds.
• To count from 1 to 42,740 would take you about eleven hours.

  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 42740 cubic inches would be around 2.9 feet tall.

Recreational maths with 42740

• 42740 backwards is 04724
• The number of decimal digits it has is: 5
• The sum of 42740's digits is 17
• More coming soon!