Q: Is 378,210 a Prime Number?
A: No, 378,210 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 378210 can be evenly divided by 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 1,801 3,602 5,403 9,005 10,806 12,607 18,010 25,214 27,015 37,821 54,030 63,035 75,642 126,070 189,105 and 378,210, with no remainder.
Since 378,210 cannot be divided by just 1 and 378,210, it is not a prime number.