123291424 has 24 divisors (see below), whose sum is σ = 244194048. Its totient is φ = 61273920.

The previous prime is 123291401. The next prime is 123291439. The reversal of 123291424 is 424192321.

It is a junction number, because it is equal to n+sod(n) for n = 123291392 and 123291401.

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, 6192 + ... + 16879.

It is an arithmetic number, because the mean of its divisors is an integer number (10174752).

Almost surely, 2^123291424 is an apocalyptic number.

It is an amenable number.

123291424 is a deficient number, since it is larger than the sum of its proper divisors (120902624).

123291424 is a wasteful number, since it uses less digits than its factorization.

123291424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23248 (or 23240 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 123291424 is about 11103.6671419851. The cubic root of 123291424 is about 497.7114396314.

The spelling of 123291424 in words is "one hundred twenty-three million, two hundred ninety-one thousand, four hundred twenty-four".