# 2138743

## 2,138,743 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 2138743 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

2138743 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 2138743:

### 2138743

See below for interesting mathematical facts about the number 2138743 from the Numbermatics database.

### Names of 2138743

• Cardinal: 2138743 can be written as Two million, one hundred thirty-eight thousand, seven hundred forty-three.

### Scientific notation

• Scientific notation: 2.138743 × 106

### Factors of 2138743

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 2138743

### Divisors of 2138743

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 2138744
• Sum of proper divisors (its aliquot sum) s(n): 1
• 2138743 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 2138742

### Bases of 2138743

• Binary: 10000010100010011101112
• Base-36: 19U9J

### Squares and roots of 2138743

• 2138743 squared (21387432) is 4574221620049
• 2138743 cubed (21387433) is 9783084470328458407
• The square root of 2138743 is 1462.4441869691
• The cube root of 2138743 is 128.8406380969

### Scales and comparisons

How big is 2138743?
• 2,138,743 seconds is equal to 3 weeks, 3 days, 18 hours, 5 minutes, 43 seconds.
• To count from 1 to 2,138,743 would take you about five weeks!

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 2138743 cubic inches would be around 10.7 feet tall.

### Recreational maths with 2138743

• 2138743 backwards is 3478312
• The number of decimal digits it has is: 7
• The sum of 2138743's digits is 28
• More coming soon!