Q: Is 672,421 a Prime Number?
A: No, 672,421 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 672421 can be evenly divided by 1 31 109 199 3,379 6,169 21,691 and 672,421, with no remainder.
Since 672,421 cannot be divided by just 1 and 672,421, it is not a prime number.