Q: Is 420,987 a Prime Number?
A: No, 420,987 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 420987 can be evenly divided by 1 3 7 21 20,047 60,141 140,329 and 420,987, with no remainder.
Since 420,987 cannot be divided by just 1 and 420,987, it is not a prime number.