Q: Is 365,421 a Prime Number?
A: No, 365,421 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 365421 can be evenly divided by 1 3 7 21 17,401 52,203 121,807 and 365,421, with no remainder.
Since 365,421 cannot be divided by just 1 and 365,421, it is not a prime number.