Q: Is 509,742 a Prime Number?
A: No, 509,742 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 509742 can be evenly divided by 1 2 3 6 9 18 28,319 56,638 84,957 169,914 254,871 and 509,742, with no remainder.
Since 509,742 cannot be divided by just 1 and 509,742, it is not a prime number.