Q: Is 1,242,207 a Prime Number?
A: No, 1,242,207 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 1242207 can be evenly divided by 1 3 9 17 23 51 69 153 207 353 391 1,059 1,173 3,177 3,519 6,001 8,119 18,003 24,357 54,009 73,071 138,023 414,069 and 1,242,207, with no remainder.
Since 1,242,207 cannot be divided by just 1 and 1,242,207, it is not a prime number.