123971888 has 40 divisors (see below), whose sum is σ = 255439008. Its totient is φ = 58084352.

The previous prime is 123971879. The next prime is 123971891. The reversal of 123971888 is 888179321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70670 + ... + 72402.

Almost surely, 2^123971888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123971888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127719504).

123971888 is an abundant number, since it is smaller than the sum of its proper divisors (131467120).

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

123971888 is a wasteful number, since it uses less digits than its factorization.

123971888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021 (or 2015 counting only the distinct ones).

The product of its digits is 193536, while the sum is 47.

The square root of 123971888 is about 11134.2663880473. The cubic root of 123971888 is about 498.6254084592.

The spelling of 123971888 in words is "one hundred twenty-three million, nine hundred seventy-one thousand, eight hundred eighty-eight".