Q: Is 668,742 a Prime Number?
A: No, 668,742 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 668742 can be evenly divided by 1 2 3 6 227 454 491 681 982 1,362 1,473 2,946 111,457 222,914 334,371 and 668,742, with no remainder.
Since 668,742 cannot be divided by just 1 and 668,742, it is not a prime number.