12 is not a factor of 124
YesIf you can divide by it and get a whole number, it is a factor.
124 62,2 31,2,2 124 4,31 2,2,31
Everything except 1, 2, 4, 31, 62, 124
which number is not a factor of 124 31, 12,4,or 2
124 62,2 31,2,2 124 4,31 2,2,31
The greatest common factor of 124 and 136 is 4.
124, yes.125, no.
124 62,2 31,2,2
No.
There is an infinite number of numbers which are not factors of 124. They are all numbers apart from 1, 2, 4, 31, 62, 124.
The rule of thumb is that if the sum of the digits of the number equals a number that is divisible by 3, then the number is divisible by 3.For example,372: 3+7+2 = 12, which is a multiple of 3 (3x4=12)So, 3 is a factor of 372(which is true, as 3 x 124 = 372).124: 1+2+4 = 7, which is not a multiple of 3So, 3 is not a factor of 124(which is true, as 124 is not evenly divisible by 3, 124/3 = 41.33333)