123987168 has 36 divisors (see below), whose sum is σ = 352589328. Its totient is φ = 41328960.

The previous prime is 123987163. The next prime is 123987247. The reversal of 123987168 is 861789321.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123987161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214968 + ... + 215543.

It is an arithmetic number, because the mean of its divisors is an integer number (9794148).

Almost surely, 2^123987168 is an apocalyptic number.

123987168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123987168 is an abundant number, since it is smaller than the sum of its proper divisors (228602160).

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

123987168 is a wasteful number, since it uses less digits than its factorization.

123987168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430527 (or 430516 counting only the distinct ones).

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

The square root of 123987168 is about 11134.9525369442. The cubic root of 123987168 is about 498.6458934347.

The spelling of 123987168 in words is "one hundred twenty-three million, nine hundred eighty-seven thousand, one hundred sixty-eight".