123965144 has 8 divisors (see below), whose sum is σ = 232434660. Its totient is φ = 61982568.

The previous prime is 123965143. The next prime is 123965161. The reversal of 123965144 is 441569321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123965143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7747814 + ... + 7747829.

Almost surely, 2^123965144 is an apocalyptic number.

It is an amenable number.

123965144 is a deficient number, since it is larger than the sum of its proper divisors (108469516).

123965144 is a wasteful number, since it uses less digits than its factorization.

123965144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15495649 (or 15495645 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 123965144 is about 11133.9635350579. The cubic root of 123965144 is about 498.6163666493.

The spelling of 123965144 in words is "one hundred twenty-three million, nine hundred sixty-five thousand, one hundred forty-four".