Q: Is 1,143,820 a Prime Number?
A: No, 1,143,820 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 1143820 can be evenly divided by 1 2 4 5 10 20 57,191 114,382 228,764 285,955 571,910 and 1,143,820, with no remainder.
Since 1,143,820 cannot be divided by just 1 and 1,143,820, it is not a prime number.