123123502 has 16 divisors (see below), whose sum is σ = 191420640. Its totient is φ = 59324832.

The previous prime is 123123499. The next prime is 123123521. The reversal of 123123502 is 205321321.

It is a self number, because there is not a number n which added to its sum of digits gives 123123502.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 33823 + ... + 37285.

It is an arithmetic number, because the mean of its divisors is an integer number (11963790).

Almost surely, 2^123123502 is an apocalyptic number.

123123502 is a deficient number, since it is larger than the sum of its proper divisors (68297138).

123123502 is a wasteful number, since it uses less digits than its factorization.

123123502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 123123502 is about 11096.1030096156. The cubic root of 123123502 is about 497.4853772122.

Adding to 123123502 its reverse (205321321), we get a palindrome (328444823).

The spelling of 123123502 in words is "one hundred twenty-three million, one hundred twenty-three thousand, five hundred two".