For example, if I have the number 142, how do I know it contains the digit 1, 4, and 2?

So far, I've worked out that

142/100 =** 1**

142 - (1*100) = 42

42/10 = **4**

42 - (4*10) = **2**

So i can just use a looping system. But is there a simpler solution to find the digits than the method shown above?