# 129842

## 129,842 is an even composite number composed of two prime numbers multiplied together.

What does the number 129842 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

129842 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 129842:

### 2 × 64921

See below for interesting mathematical facts about the number 129842 from the Numbermatics database.

### Names of 129842

• Cardinal: 129842 can be written as One hundred twenty-nine thousand, eight hundred forty-two.

### Scientific notation

• Scientific notation: 1.29842 × 105

### Factors of 129842

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 64923

### Divisors of 129842

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 194766
• Sum of proper divisors (its aliquot sum) s(n): 64924
• 129842 is a deficient number, because the sum of its proper divisors (64924) is less than itself. Its deficiency is 64918

### Bases of 129842

• Binary: 111111011001100102
• Base-36: 2S6Q

### Squares and roots of 129842

• 129842 squared (1298422) is 16858944964
• 129842 cubed (1298423) is 2188999132015688
• The square root of 129842 is 360.3359543539
• The cube root of 129842 is 50.6374388985

### Scales and comparisons

How big is 129842?
• 129,842 seconds is equal to 1 day, 12 hours, 4 minutes, 2 seconds.
• To count from 1 to 129,842 would take you about twelve 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 129842 cubic inches would be around 4.2 feet tall.

### Recreational maths with 129842

• 129842 backwards is 248921
• The number of decimal digits it has is: 6
• The sum of 129842's digits is 26
• More coming soon!