Q: Is 420,945 a Prime Number?
A: No, 420,945 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 420945 can be evenly divided by 1 3 5 7 15 19 21 35 57 95 105 133 211 285 399 633 665 1,055 1,477 1,995 3,165 4,009 4,431 7,385 12,027 20,045 22,155 28,063 60,135 84,189 140,315 and 420,945, with no remainder.
Since 420,945 cannot be divided by just 1 and 420,945, it is not a prime number.