123321879 has 16 divisors (see below), whose sum is σ = 182880000. Its totient is φ = 82133208.

The previous prime is 123321857. The next prime is 123321889. The reversal of 123321879 is 978123321.

It is not a de Polignac number, because 123321879 - 2¹¹ = 123319831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123321889) 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 15 ways as a sum of consecutive naturals, for example, 39622 + ... + 42620.

It is an arithmetic number, because the mean of its divisors is an integer number (11430000).

Almost surely, 2^123321879 is an apocalyptic number.

123321879 is a deficient number, since it is larger than the sum of its proper divisors (59558121).

123321879 is a wasteful number, since it uses less digits than its factorization.

123321879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531 (or 4525 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 123321879 is about 11105.0384510816. The cubic root of 123321879 is about 497.7524172152.

The spelling of 123321879 in words is "one hundred twenty-three million, three hundred twenty-one thousand, eight hundred seventy-nine".