123542630042515 has 8 divisors (see below), whose sum is σ = 148390620926688. Its totient is φ = 98741127450240.

The previous prime is 123542630042497. The next prime is 123542630042537. The reversal of 123542630042515 is 515240036245321.

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

It is not a de Polignac number, because 123542630042515 - 2⁷ = 123542630042387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11622067126 + ... + 11622077755.

It is an arithmetic number, because the mean of its divisors is an integer number (18548827615836).

Almost surely, 2^{123542630042515} is an apocalyptic number.

123542630042515 is a deficient number, since it is larger than the sum of its proper divisors (24847990884173).

123542630042515 is a wasteful number, since it uses less digits than its factorization.

123542630042515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23244145949.

The product of its (nonzero) digits is 864000, while the sum is 43.

Adding to 123542630042515 its reverse (515240036245321), we get a palindrome (638782666287836).

The spelling of 123542630042515 in words is "one hundred twenty-three trillion, five hundred forty-two billion, six hundred thirty million, forty-two thousand, five hundred fifteen".