123478944 has 24 divisors (see below), whose sum is σ = 324132480. Its totient is φ = 41159616.

The previous prime is 123478937. The next prime is 123478951. The reversal of 123478944 is 449874321.

It is an interprime number because it is at equal distance from previous prime (123478937) and next prime (123478951).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×123478944² = 30494099222710272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123478896 and 123478905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643024 + ... + 643215.

It is an arithmetic number, because the mean of its divisors is an integer number (13505520).

Almost surely, 2^123478944 is an apocalyptic number.

It is an amenable number.

123478944 is an abundant number, since it is smaller than the sum of its proper divisors (200653536).

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

123478944 is a wasteful number, since it uses less digits than its factorization.

123478944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286252 (or 1286244 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 123478944 is about 11112.1079908359. The cubic root of 123478944 is about 497.9636430934.

The spelling of 123478944 in words is "one hundred twenty-three million, four hundred seventy-eight thousand, nine hundred forty-four".