123120444 has 24 divisors (see below), whose sum is σ = 287653968. Its totient is φ = 40986880.

The previous prime is 123120427. The next prime is 123120479. The reversal of 123120444 is 444021321.

It is a self number, because there is not a number n which added to its sum of digits gives 123120444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3604 + ... + 16100.

It is an arithmetic number, because the mean of its divisors is an integer number (11985582).

Almost surely, 2^123120444 is an apocalyptic number.

It is an amenable number.

123120444 is an abundant number, since it is smaller than the sum of its proper divisors (164533524).

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

123120444 is a wasteful number, since it uses less digits than its factorization.

123120444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13325 (or 13323 counting only the distinct ones).

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

The square root of 123120444 is about 11095.9652126347. The cubic root of 123120444 is about 497.4812585215.

Adding to 123120444 its reverse (444021321), we get a palindrome (567141765).

The spelling of 123120444 in words is "one hundred twenty-three million, one hundred twenty thousand, four hundred forty-four".