Q: Is 842,478 a Prime Number?
A: No, 842,478 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 842478 can be evenly divided by 1 2 3 6 7 13 14 21 26 39 42 78 91 182 273 546 1,543 3,086 4,629 9,258 10,801 20,059 21,602 32,403 40,118 60,177 64,806 120,354 140,413 280,826 421,239 and 842,478, with no remainder.
Since 842,478 cannot be divided by just 1 and 842,478, it is not a prime number.