123242415542 has 16 divisors (see below), whose sum is σ = 185530363920. Its totient is φ = 61399360512.

The previous prime is 123242415529. The next prime is 123242415587. The reversal of 123242415542 is 245514242321.

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, 520934 + ... + 719622.

It is an arithmetic number, because the mean of its divisors is an integer number (11595647745).

Almost surely, 2^123242415542 is an apocalyptic number.

123242415542 is a deficient number, since it is larger than the sum of its proper divisors (62287948378).

123242415542 is a wasteful number, since it uses less digits than its factorization.

123242415542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199807.

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

Adding to 123242415542 its reverse (245514242321), we get a palindrome (368756657863).

The spelling of 123242415542 in words is "one hundred twenty-three billion, two hundred forty-two million, four hundred fifteen thousand, five hundred forty-two".