Q: Is 3,920,421 a Prime Number?
A: No, 3,920,421 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 3920421 can be evenly divided by 1 3 17 51 76,871 230,613 1,306,807 and 3,920,421, with no remainder.
Since 3,920,421 cannot be divided by just 1 and 3,920,421, it is not a prime number.