123378880 has 28 divisors (see below), whose sum is σ = 293796720. Its totient is φ = 49351424.

The previous prime is 123378863. The next prime is 123378889. The reversal of 123378880 is 88873321.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (123378889) by changing a digit.

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, 192460 + ... + 193099.

It is an arithmetic number, because the mean of its divisors is an integer number (10492740).

Almost surely, 2^123378880 is an apocalyptic number.

123378880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123378880 is an abundant number, since it is smaller than the sum of its proper divisors (170417840).

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

123378880 is an equidigital number, since it uses as much as digits as its factorization.

123378880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385576 (or 385566 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 123378880 is about 11107.6046022534. The cubic root of 123378880 is about 497.8290946480.

The spelling of 123378880 in words is "one hundred twenty-three million, three hundred seventy-eight thousand, eight hundred eighty".