Reverse Integer

def reverse(x):
    MIN = -2147483648
    MAX = 2147483647
    
    res = 0
    while x:
        digit = int(math.fmod(x, 10))
        x = int(x / 10)
        
        if (res > MAX // 10 or 
           (res == MAX // 10 and digit >= MAX % 10)):
            return 0
        if (res < MIN // 10 or 
           (res == MIN // 10 and digit <= MIN % 10)):
            return 0
            
        res = (res * 10) + digit
        
    return res