Q: Is 423,400 a Prime Number?
A: No, 423,400 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 423400 can be evenly divided by 1 2 4 5 8 10 20 25 29 40 50 58 73 100 116 145 146 200 232 290 292 365 580 584 725 730 1,160 1,450 1,460 1,825 2,117 2,900 2,920 3,650 4,234 5,800 7,300 8,468 10,585 14,600 16,936 21,170 42,340 52,925 84,680 105,850 211,700 and 423,400, with no remainder.
Since 423,400 cannot be divided by just 1 and 423,400, it is not a prime number.