# 81243

## 81,243 is an odd composite number composed of three prime numbers multiplied together.

What does the number 81243 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

81243 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

## Prime factorization of 81243:

### 34 × 17 × 59

(3 × 3 × 3 × 3 × 17 × 59)

See below for interesting mathematical facts about the number 81243 from the Numbermatics database.

### Names of 81243

• Cardinal: 81243 can be written as Eighty-one thousand, two hundred forty-three.

### Scientific notation

• Scientific notation: 8.1243 × 104

### Factors of 81243

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 79

### Divisors of 81243

• Number of divisors d(n): 20
• Complete list of divisors:
• Sum of all divisors σ(n): 130680
• Sum of proper divisors (its aliquot sum) s(n): 49437
• 81243 is a deficient number, because the sum of its proper divisors (49437) is less than itself. Its deficiency is 31806

### Bases of 81243

• Binary: 100111101010110112
• Base-36: 1QOR

### Squares and roots of 81243

• 81243 squared (812432) is 6600425049
• 81243 cubed (812433) is 536238332255907
• The square root of 81243 is 285.0315771981
• The cube root of 81243 is 43.3107114009

### Scales and comparisons

How big is 81243?
• 81,243 seconds is equal to 22 hours, 34 minutes, 3 seconds.
• To count from 1 to 81,243 would take you about twenty-two 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 81243 cubic inches would be around 3.6 feet tall.

### Recreational maths with 81243

• 81243 backwards is 34218
• The number of decimal digits it has is: 5
• The sum of 81243's digits is 18
• More coming soon!