123440104 has 16 divisors (see below), whose sum is σ = 231678720. Its totient is φ = 61659120.

The previous prime is 123440101. The next prime is 123440113. The reversal of 123440104 is 401044321.

It is not an unprimeable number, because it can be changed into a prime (123440101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1657 + ... + 15799.

It is an arithmetic number, because the mean of its divisors is an integer number (14479920).

Almost surely, 2^123440104 is an apocalyptic number.

It is an amenable number.

123440104 is a deficient number, since it is larger than the sum of its proper divisors (108238616).

123440104 is a wasteful number, since it uses less digits than its factorization.

123440104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15240 (or 15236 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 123440104 is about 11110.3602101822. The cubic root of 123440104 is about 497.9114265360.

Adding to 123440104 its reverse (401044321), we get a palindrome (524484425).

The spelling of 123440104 in words is "one hundred twenty-three million, four hundred forty thousand, one hundred four".