123015231135242 has 16 divisors (see below), whose sum is σ = 184577506548864. Its totient is φ = 61489397970000.

The previous prime is 123015231135169. The next prime is 123015231135271. The reversal of 123015231135242 is 242531132510321.

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, 105480392 + ... + 106640252.

It is an arithmetic number, because the mean of its divisors is an integer number (11536094159304).

Almost surely, 2^{123015231135242} is an apocalyptic number.

123015231135242 is a deficient number, since it is larger than the sum of its proper divisors (61562275413622).

123015231135242 is a wasteful number, since it uses less digits than its factorization.

123015231135242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175525.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 123015231135242 its reverse (242531132510321), we get a palindrome (365546363645563).

The spelling of 123015231135242 in words is "one hundred twenty-three trillion, fifteen billion, two hundred thirty-one million, one hundred thirty-five thousand, two hundred forty-two".