123123538 has 8 divisors (see below), whose sum is σ = 184745088. Its totient is φ = 61541844.

The previous prime is 123123529. The next prime is 123123541. The reversal of 123123538 is 835321321.

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

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, 406 + ... + 15697.

It is an arithmetic number, because the mean of its divisors is an integer number (23093136).

Almost surely, 2^123123538 is an apocalyptic number.

123123538 is a deficient number, since it is larger than the sum of its proper divisors (61621550).

123123538 is a wasteful number, since it uses less digits than its factorization.

123123538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19928.

The product of its digits is 4320, while the sum is 28.

The square root of 123123538 is about 11096.1046318066. The cubic root of 123123538 is about 497.4854256987.

Adding to 123123538 its reverse (835321321), we get a palindrome (958444859).

The spelling of 123123538 in words is "one hundred twenty-three million, one hundred twenty-three thousand, five hundred thirty-eight".