123821888 has 28 divisors (see below), whose sum is σ = 246481092. Its totient is φ = 61716480.

The previous prime is 123821849. The next prime is 123821891. The reversal of 123821888 is 888128321.

It can be written as a sum of positive squares in 2 ways, for example, as 47224384 + 76597504 = 6872^2 + 8752^2 .

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 3 ways as a sum of consecutive naturals, for example, 18698 + ... + 24438.

Almost surely, 2^123821888 is an apocalyptic number.

It is an amenable number.

123821888 is a deficient number, since it is larger than the sum of its proper divisors (122659204).

123821888 is an equidigital number, since it uses as much as digits as its factorization.

123821888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6090 (or 6080 counting only the distinct ones).

The product of its digits is 49152, while the sum is 41.

The square root of 123821888 is about 11127.5283868431. The cubic root of 123821888 is about 498.4242230712.

The spelling of 123821888 in words is "one hundred twenty-three million, eight hundred twenty-one thousand, eight hundred eighty-eight".