123639167 has 2 divisors, whose sum is σ = 123639168. Its totient is φ = 123639166.

The previous prime is 123639133. The next prime is 123639169. The reversal of 123639167 is 761936321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123639167 - 2²⁰ = 122590591 is a prime.

Together with 123639169, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123639167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123639169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61819583 + 61819584.

It is an arithmetic number, because the mean of its divisors is an integer number (61819584).

Almost surely, 2^123639167 is an apocalyptic number.

123639167 is a deficient number, since it is larger than the sum of its proper divisors (1).

123639167 is an equidigital number, since it uses as much as digits as its factorization.

123639167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 123639167 is about 11119.3150418540. The cubic root of 123639167 is about 498.1789314711.

The spelling of 123639167 in words is "one hundred twenty-three million, six hundred thirty-nine thousand, one hundred sixty-seven".