Q: Is 1,221,438 a Prime Number?
A: No, 1,221,438 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 1221438 can be evenly divided by 1 2 3 6 23 46 53 69 106 138 159 167 318 334 501 1,002 1,219 2,438 3,657 3,841 7,314 7,682 8,851 11,523 17,702 23,046 26,553 53,106 203,573 407,146 610,719 and 1,221,438, with no remainder.
Since 1,221,438 cannot be divided by just 1 and 1,221,438, it is not a prime number.