123988668 has 24 divisors (see below), whose sum is σ = 289669968. Its totient is φ = 41277696.

The previous prime is 123988663. The next prime is 123988673. The reversal of 123988668 is 866889321.

It is an interprime number because it is at equal distance from previous prime (123988663) and next prime (123988673).

It is a self number, because there is not a number n which added to its sum of digits gives 123988668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123988663) 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 7 ways as a sum of consecutive naturals, for example, 4180 + ... + 16292.

It is an arithmetic number, because the mean of its divisors is an integer number (12069582).

Almost surely, 2^123988668 is an apocalyptic number.

It is an amenable number.

123988668 is an abundant number, since it is smaller than the sum of its proper divisors (165681300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123988668 is a wasteful number, since it uses less digits than its factorization.

123988668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12973 (or 12971 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 123988668 is about 11135.0198922139. The cubic root of 123988668 is about 498.6479043036.

The spelling of 123988668 in words is "one hundred twenty-three million, nine hundred eighty-eight thousand, six hundred sixty-eight".