123398122 has 16 divisors (see below), whose sum is σ = 195521760. Its totient is φ = 58246992.

The previous prime is 123398117. The next prime is 123398123. The reversal of 123398122 is 221893321.

It is not an unprimeable number, because it can be changed into a prime (123398123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5593 + ... + 16675.

It is an arithmetic number, because the mean of its divisors is an integer number (12220110).

Almost surely, 2^123398122 is an apocalyptic number.

123398122 is a deficient number, since it is larger than the sum of its proper divisors (72123638).

123398122 is a wasteful number, since it uses less digits than its factorization.

123398122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11397.

The product of its digits is 5184, while the sum is 31.

The square root of 123398122 is about 11108.4707318334. The cubic root of 123398122 is about 497.8549735491.

The spelling of 123398122 in words is "one hundred twenty-three million, three hundred ninety-eight thousand, one hundred twenty-two".