Factors of 423
The factors of 423 are 1, 3, 9, 47, 141, and 423. In total, 423 has 6 factors. Its prime factorization is 3² × 47, and the sum of all its factors is 624.
All factors of 423
Here are all 6 factors of 423, listed from smallest to largest.
Factor pairs of 423
These 3 pairs of whole numbers each multiply to give 423.
Prime factorization of 423
Dividing 423 by the smallest prime at each step gives its prime factorization:
The distinct prime factors of 423 are 3, 47. To factorize any other number, use the prime factorization calculator.
Factor tree of 423
A factor tree shows the same prime factorization visually. Each composite branch splits until every endpoint is a prime number.
Properties of 423
| Number of factors | 6 |
|---|---|
| Sum of factors | 624 |
| Sum of proper factors | 201 |
| Prime factorization | 3² × 47 |
| Prime or composite? | Composite |
| Even or odd? | Odd |
| Perfect square? | No |
| Perfect cube? | No |
| Classification | Deficient |
What makes 423 interesting
- 423 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 3 different ways.
- 423 is a deficient number: its proper factors sum to 201, which is 222 less than 423 itself.
How to find the factors of 423 yourself
Divide 423 by each whole number starting from 1. Whenever the division leaves no remainder, both the divisor and the quotient are factors. You only need to test up to √423 ≈ 20.57, because every factor above that pairs with one below it.
Reading both columns gives every factor: 1, 3, 9, 47, 141, 423. The factor calculator does this automatically for any number.
Related numbers
Numbers mathematically connected to 423.
Frequently asked questions about 423
What are the factors of 423?
Is 423 a prime number?
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What two numbers multiply to give 423?
What is the sum of the factors of 423?
Is 423 a perfect square?
What is the largest factor of 423 other than itself?
How many factors does 423 have?
Explore more
Try another number in the factor calculator, break 423 down further with the prime factorization calculator, or compare 423 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.