123144112 has 80 divisors (see below), whose sum is σ = 297480960. Its totient is φ = 48082176.

The previous prime is 123144101. The next prime is 123144143. The reversal of 123144112 is 211441321.

It is a self number, because there is not a number n which added to its sum of digits gives 123144112.

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, 120339 + ... + 121357.

It is an arithmetic number, because the mean of its divisors is an integer number (3718512).

Almost surely, 2^123144112 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 123144112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148740480).

123144112 is an abundant number, since it is smaller than the sum of its proper divisors (174336848).

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

123144112 is a wasteful number, since it uses less digits than its factorization.

123144112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1124 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 123144112 is about 11097.0316751823. The cubic root of 123144112 is about 497.5131341701.

Adding to 123144112 its reverse (211441321), we get a palindrome (334585433).

It can be divided in two parts, 123144 and 112, that added together give a triangular number (123256 = T₄₉₆).

The spelling of 123144112 in words is "one hundred twenty-three million, one hundred forty-four thousand, one hundred twelve".