Q: Is 1,240,855 a Prime Number?
A: No, 1,240,855 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 1240855 can be evenly divided by 1 5 7 11 35 55 77 121 293 385 605 847 1,465 2,051 3,223 4,235 10,255 16,115 22,561 35,453 112,805 177,265 248,171 and 1,240,855, with no remainder.
Since 1,240,855 cannot be divided by just 1 and 1,240,855, it is not a prime number.