Q: Is 422,840 a Prime Number?
A: No, 422,840 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 422840 can be evenly divided by 1 2 4 5 8 10 11 20 22 31 40 44 55 62 88 110 124 155 220 248 310 341 440 620 682 961 1,240 1,364 1,705 1,922 2,728 3,410 3,844 4,805 6,820 7,688 9,610 10,571 13,640 19,220 21,142 38,440 42,284 52,855 84,568 105,710 211,420 and 422,840, with no remainder.
Since 422,840 cannot be divided by just 1 and 422,840, it is not a prime number.