# 420639

## 420,639 is an odd composite number composed of three prime numbers multiplied together.

What does the number 420639 look like?

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

420639 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 420639:

### 3 × 31 × 4523

See below for interesting mathematical facts about the number 420639 from the Numbermatics database.

### Names of 420639

• Cardinal: 420639 can be written as Four hundred twenty thousand, six hundred thirty-nine.

### Scientific notation

• Scientific notation: 4.20639 × 105

### Factors of 420639

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 4557

### Divisors of 420639

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 579072
• Sum of proper divisors (its aliquot sum) s(n): 158433
• 420639 is a deficient number, because the sum of its proper divisors (158433) is less than itself. Its deficiency is 262206

### Bases of 420639

• Binary: 11001101011000111112
• Base-36: 90KF

### Squares and roots of 420639

• 420639 squared (4206392) is 176937168321
• 420639 cubed (4206393) is 74426673545377119
• The square root of 420639 is 648.5668816707
• The cube root of 420639 is 74.9266839089

### Scales and comparisons

How big is 420639?
• 420,639 seconds is equal to 4 days, 20 hours, 50 minutes, 39 seconds.
• To count from 1 to 420,639 would take you about four days.

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 420639 cubic inches would be around 6.2 feet tall.

### Recreational maths with 420639

• 420639 backwards is 936024
• The number of decimal digits it has is: 6
• The sum of 420639's digits is 24
• More coming soon!