Q: Is 1,236,420 a Prime Number?
A: No, 1,236,420 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 1236420 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 6,869 13,738 20,607 27,476 34,345 41,214 61,821 68,690 82,428 103,035 123,642 137,380 206,070 247,284 309,105 412,140 618,210 and 1,236,420, with no remainder.
Since 1,236,420 cannot be divided by just 1 and 1,236,420, it is not a prime number.