Q: Is 342,405 a Prime Number?
A: No, 342,405 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 342405 can be evenly divided by 1 3 5 7 9 15 21 35 45 63 105 315 1,087 3,261 5,435 7,609 9,783 16,305 22,827 38,045 48,915 68,481 114,135 and 342,405, with no remainder.
Since 342,405 cannot be divided by just 1 and 342,405, it is not a prime number.