Q: Is 1,020,605 a Prime Number?
A: No, 1,020,605 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 1020605 can be evenly divided by 1 5 43 47 101 215 235 505 2,021 4,343 4,747 10,105 21,715 23,735 204,121 and 1,020,605, with no remainder.
Since 1,020,605 cannot be divided by just 1 and 1,020,605, it is not a prime number.