456 - 234 = 222
690...
123 x 456 = 56,088
456 x 1000 = 456000
The prime factors of 456 are 2 x 2 x 2 x 3 x 19
456 = 23 x 3 x 19
456 x 65 = 29640 and 465 x 56 = 26040 so 456 x 65 is greater.
Only 234 is divisible by both 2 and 9.
234 x 123 = 28782
12345 X 234 = 2,888,730
4 x 234 = 936
456 x 2 = 912