Q: Is 1,209,580 a Prime Number?
A: No, 1,209,580 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 1209580 can be evenly divided by 1 2 4 5 10 20 197 307 394 614 788 985 1,228 1,535 1,970 3,070 3,940 6,140 60,479 120,958 241,916 302,395 604,790 and 1,209,580, with no remainder.
Since 1,209,580 cannot be divided by just 1 and 1,209,580, it is not a prime number.