Q: Is 342,820 a Prime Number?
A: No, 342,820 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 342820 can be evenly divided by 1 2 4 5 10 20 61 122 244 281 305 562 610 1,124 1,220 1,405 2,810 5,620 17,141 34,282 68,564 85,705 171,410 and 342,820, with no remainder.
Since 342,820 cannot be divided by just 1 and 342,820, it is not a prime number.