Q: Is 420,495 a Prime Number?
A: No, 420,495 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 420495 can be evenly divided by 1 3 5 15 17 51 85 97 255 289 291 485 867 1,445 1,455 1,649 4,335 4,947 8,245 24,735 28,033 84,099 140,165 and 420,495, with no remainder.
Since 420,495 cannot be divided by just 1 and 420,495, it is not a prime number.