Q: Is 420,580 a Prime Number?
A: No, 420,580 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 420580 can be evenly divided by 1 2 4 5 10 17 20 34 68 85 170 340 1,237 2,474 4,948 6,185 12,370 21,029 24,740 42,058 84,116 105,145 210,290 and 420,580, with no remainder.
Since 420,580 cannot be divided by just 1 and 420,580, it is not a prime number.