Q: Is 420,147 a Prime Number?
A: No, 420,147 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 420147 can be evenly divided by 1 3 7 9 13 19 21 27 39 57 63 81 91 117 133 171 189 243 247 273 351 399 513 567 741 819 1,053 1,197 1,539 1,701 1,729 2,223 2,457 3,159 3,591 4,617 5,187 6,669 7,371 10,773 15,561 20,007 22,113 32,319 46,683 60,021 140,049 and 420,147, with no remainder.
Since 420,147 cannot be divided by just 1 and 420,147, it is not a prime number.