123404105 has 32 divisors (see below), whose sum is σ = 174026880. Its totient is φ = 83000320.

The previous prime is 123404059. The next prime is 123404119. The reversal of 123404105 is 501404321.

It is not a de Polignac number, because 123404105 - 2²⁴ = 106626889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54047 + ... + 56283.

It is an arithmetic number, because the mean of its divisors is an integer number (5438340).

Almost surely, 2^123404105 is an apocalyptic number.

It is an amenable number.

123404105 is a deficient number, since it is larger than the sum of its proper divisors (50622775).

123404105 is a wasteful number, since it uses less digits than its factorization.

123404105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 123404105 is about 11108.7400275639. The cubic root of 123404105 is about 497.8630196418.

Adding to 123404105 its reverse (501404321), we get a palindrome (624808426).

The spelling of 123404105 in words is "one hundred twenty-three million, four hundred four thousand, one hundred five".