123639134 has 8 divisors (see below), whose sum is σ = 185711880. Its totient is φ = 61735176.

The previous prime is 123639133. The next prime is 123639167. The reversal of 123639134 is 431936321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 123639134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123639133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40349 + ... + 43304.

It is an arithmetic number, because the mean of its divisors is an integer number (23213985).

Almost surely, 2^123639134 is an apocalyptic number.

123639134 is a deficient number, since it is larger than the sum of its proper divisors (62072746).

123639134 is an equidigital number, since it uses as much as digits as its factorization.

123639134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84394.

The product of its digits is 11664, while the sum is 32.

The square root of 123639134 is about 11119.3135579495. The cubic root of 123639134 is about 498.1788871488.

The spelling of 123639134 in words is "one hundred twenty-three million, six hundred thirty-nine thousand, one hundred thirty-four".