12115034542 has 16 divisors (see below), whose sum is σ = 20099372832. Its totient is φ = 5440430880.

The previous prime is 12115034531. The next prime is 12115034563. The reversal of 12115034542 is 24543051121.

It is a self number, because there is not a number n which added to its sum of digits gives 12115034542.

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, 6295834 + ... + 6297757.

It is an arithmetic number, because the mean of its divisors is an integer number (1256210802).

Almost surely, 2^12115034542 is an apocalyptic number.

12115034542 is a deficient number, since it is larger than the sum of its proper divisors (7984338290).

12115034542 is a wasteful number, since it uses less digits than its factorization.

12115034542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12593643.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 12115034542 its reverse (24543051121), we get a palindrome (36658085663).

The spelling of 12115034542 in words is "twelve billion, one hundred fifteen million, thirty-four thousand, five hundred forty-two".