# 39742

## 39,742 is an even composite number composed of three prime numbers multiplied together.

What does the number 39742 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

39742 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 39742:

### 2 × 31 × 641

See below for interesting mathematical facts about the number 39742 from the Numbermatics database.

### Names of 39742

• Cardinal: 39742 can be written as Thirty-nine thousand, seven hundred forty-two.

### Scientific notation

• Scientific notation: 3.9742 × 104

### Factors of 39742

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 674

### Divisors of 39742

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 61632
• Sum of proper divisors (its aliquot sum) s(n): 21890
• 39742 is a deficient number, because the sum of its proper divisors (21890) is less than itself. Its deficiency is 17852

### Bases of 39742

• Binary: 10011011001111102
• Base-36: UNY

### Squares and roots of 39742

• 39742 squared (397422) is 1579426564
• 39742 cubed (397423) is 62769570506488
• The square root of 39742 is 199.3539565697
• The cube root of 39742 is 34.1258313117

### Scales and comparisons

How big is 39742?
• 39,742 seconds is equal to 11 hours, 2 minutes, 22 seconds.
• To count from 1 to 39,742 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 39742 cubic inches would be around 2.8 feet tall.

### Recreational maths with 39742

• 39742 backwards is 24793
• The number of decimal digits it has is: 5
• The sum of 39742's digits is 25
• More coming soon!