Q: Is 620,420 a Prime Number?
A: No, 620,420 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 620420 can be evenly divided by 1 2 4 5 10 20 67 134 268 335 463 670 926 1,340 1,852 2,315 4,630 9,260 31,021 62,042 124,084 155,105 310,210 and 620,420, with no remainder.
Since 620,420 cannot be divided by just 1 and 620,420, it is not a prime number.