Q: Is 1,209,640 a Prime Number?
A: No, 1,209,640 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 1209640 can be evenly divided by 1 2 4 5 8 10 20 40 30,241 60,482 120,964 151,205 241,928 302,410 604,820 and 1,209,640, with no remainder.
Since 1,209,640 cannot be divided by just 1 and 1,209,640, it is not a prime number.