123123042 has 24 divisors (see below), whose sum is σ = 304876416. Its totient is φ = 35177976.

The previous prime is 123123031. The next prime is 123123043. The reversal of 123123042 is 240321321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (123123043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 488458 + ... + 488709.

It is an arithmetic number, because the mean of its divisors is an integer number (12703184).

Almost surely, 2^123123042 is an apocalyptic number.

123123042 is an abundant number, since it is smaller than the sum of its proper divisors (181753374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123123042 is a wasteful number, since it uses less digits than its factorization.

123123042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977182 (or 977179 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 123123042 is about 11096.0822815983. The cubic root of 123123042 is about 497.4847576620.

Adding to 123123042 its reverse (240321321), we get a palindrome (363444363).

The spelling of 123123042 in words is "one hundred twenty-three million, one hundred twenty-three thousand, forty-two".