123500012 has 12 divisors (see below), whose sum is σ = 218353800. Its totient is φ = 61113216.

The previous prime is 123500011. The next prime is 123500059. The reversal of 123500012 is 210005321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 123500012.

It is not an unprimeable number, because it can be changed into a prime (123500011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158762 + ... + 159537.

It is an arithmetic number, because the mean of its divisors is an integer number (18196150).

Almost surely, 2^123500012 is an apocalyptic number.

It is an amenable number.

123500012 is a deficient number, since it is larger than the sum of its proper divisors (94853788).

123500012 is a wasteful number, since it uses less digits than its factorization.

123500012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318400 (or 318398 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 123500012 is about 11113.0559253519. The cubic root of 123500012 is about 497.9919623655.

Adding to 123500012 its reverse (210005321), we get a palindrome (333505333).

The spelling of 123500012 in words is "one hundred twenty-three million, five hundred thousand, twelve".