Q: Is 242,478 a Prime Number?
A: No, 242,478 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 242478 can be evenly divided by 1 2 3 6 9 18 19 38 57 114 171 342 709 1,418 2,127 4,254 6,381 12,762 13,471 26,942 40,413 80,826 121,239 and 242,478, with no remainder.
Since 242,478 cannot be divided by just 1 and 242,478, it is not a prime number.