123442104 has 64 divisors (see below), whose sum is σ = 325036800. Its totient is φ = 38990336.

The previous prime is 123442097. The next prime is 123442129. The reversal of 123442104 is 401244321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61387 + ... + 63365.

It is an arithmetic number, because the mean of its divisors is an integer number (5078700).

Almost surely, 2^123442104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123442104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162518400).

123442104 is an abundant number, since it is smaller than the sum of its proper divisors (201594696).

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

123442104 is a wasteful number, since it uses less digits than its factorization.

123442104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 123442104 is about 11110.4502159003. The cubic root of 123442104 is about 497.9141156066.

Adding to 123442104 its reverse (401244321), we get a palindrome (524686425).

The spelling of 123442104 in words is "one hundred twenty-three million, four hundred forty-two thousand, one hundred four".