123153959 has 12 divisors (see below), whose sum is σ = 126915624. Its totient is φ = 119498064.

The previous prime is 123153949. The next prime is 123154007. The reversal of 123153959 is 959351321.

It is a happy number.

It is not a de Polignac number, because 123153959 - 2²⁰ = 122105383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123153949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 435032 + ... + 435314.

It is an arithmetic number, because the mean of its divisors is an integer number (10576302).

Almost surely, 2^123153959 is an apocalyptic number.

123153959 is a deficient number, since it is larger than the sum of its proper divisors (3761665).

123153959 is an equidigital number, since it uses as much as digits as its factorization.

123153959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 527 counting only the distinct ones).

The product of its digits is 36450, while the sum is 38.

The square root of 123153959 is about 11097.4753435185. The cubic root of 123153959 is about 497.5263947344.

The spelling of 123153959 in words is "one hundred twenty-three million, one hundred fifty-three thousand, nine hundred fifty-nine".