123012502524542 has 16 divisors (see below), whose sum is σ = 184781424102912. Its totient is φ = 61418755276800.

The previous prime is 123012502524521. The next prime is 123012502524629. The reversal of 123012502524542 is 245425205210321.

It is a junction number, because it is equal to n+sod(n) for n = 123012502524496 and 123012502524505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11147459 + ... + 19242942.

It is an arithmetic number, because the mean of its divisors is an integer number (11548839006432).

Almost surely, 2^{123012502524542} is an apocalyptic number.

123012502524542 is a deficient number, since it is larger than the sum of its proper divisors (61768921578370).

123012502524542 is a wasteful number, since it uses less digits than its factorization.

123012502524542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30393283.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 123012502524542 its reverse (245425205210321), we get a palindrome (368437707734863).

The spelling of 123012502524542 in words is "one hundred twenty-three trillion, twelve billion, five hundred two million, five hundred twenty-four thousand, five hundred forty-two".