Q: Is 4,200,345 a Prime Number?
A: No, 4,200,345 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 4200345 can be evenly divided by 1 3 5 9 15 31 45 93 155 279 465 1,395 3,011 9,033 15,055 27,099 45,165 93,341 135,495 280,023 466,705 840,069 1,400,115 and 4,200,345, with no remainder.
Since 4,200,345 cannot be divided by just 1 and 4,200,345, it is not a prime number.