# 1243

## 1,243 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1243 look like?

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

1243 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 1243:

### 11 × 113

See below for interesting mathematical facts about the number 1243 from the Numbermatics database.

### Names of 1243

• Cardinal: 1243 can be written as One thousand, two hundred forty-three.

### Scientific notation

• Scientific notation: 1.243 × 103

### Factors of 1243

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 124

### Divisors of 1243

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 1368
• Sum of proper divisors (its aliquot sum) s(n): 125
• 1243 is a deficient number, because the sum of its proper divisors (125) is less than itself. Its deficiency is 1118

### Bases of 1243

• Binary: 100110110112
• Base-36: YJ

### Squares and roots of 1243

• 1243 squared (12432) is 1545049
• 1243 cubed (12433) is 1920495907
• The square root of 1243 is 35.2562051277
• The cube root of 1243 is 10.7520277409

### Scales and comparisons

How big is 1243?
• 1,243 seconds is equal to 20 minutes, 43 seconds.
• To count from 1 to 1,243 would take you about twenty minutes.

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 1243 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1243

• 1243 backwards is 3421
• The number of decimal digits it has is: 4
• The sum of 1243's digits is 10
• More coming soon!