123012242052542 has 8 divisors (see below), whose sum is σ = 184519121345616. Its totient is φ = 61505868270672.

The previous prime is 123012242052521. The next prime is 123012242052587. The reversal of 123012242052542 is 245250242210321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125768858 + ... + 126743165.

It is an arithmetic number, because the mean of its divisors is an integer number (23064890168202).

Almost surely, 2^{123012242052542} is an apocalyptic number.

123012242052542 is a deficient number, since it is larger than the sum of its proper divisors (61506879293074).

123012242052542 is a wasteful number, since it uses less digits than its factorization.

123012242052542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252755602.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 123012242052542 its reverse (245250242210321), we get a palindrome (368262484262863).

The spelling of 123012242052542 in words is "one hundred twenty-three trillion, twelve billion, two hundred forty-two million, fifty-two thousand, five hundred forty-two".