123881679 has 18 divisors (see below), whose sum is σ = 180525800. Its totient is φ = 81860328.

The previous prime is 123881633. The next prime is 123881689. The reversal of 123881679 is 976188321.

It is not a de Polignac number, because 123881679 - 2⁹ = 123881167 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 (123881609) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 470902 + ... + 471164.

Almost surely, 2^123881679 is an apocalyptic number.

123881679 is a deficient number, since it is larger than the sum of its proper divisors (56644121).

123881679 is an equidigital number, since it uses as much as digits as its factorization.

123881679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 465 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 123881679 is about 11130.2146879564. The cubic root of 123881679 is about 498.5044363724.

The spelling of 123881679 in words is "one hundred twenty-three million, eight hundred eighty-one thousand, six hundred seventy-nine".