123225784 has 32 divisors (see below), whose sum is σ = 255104640. Its totient is φ = 55333600.

The previous prime is 123225769. The next prime is 123225803. The reversal of 123225784 is 487522321.

It is a happy number.

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, 1132 + ... + 15739.

It is an arithmetic number, because the mean of its divisors is an integer number (7972020).

Almost surely, 2^123225784 is an apocalyptic number.

It is an amenable number.

123225784 is an abundant number, since it is smaller than the sum of its proper divisors (131878856).

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

123225784 is a wasteful number, since it uses less digits than its factorization.

123225784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16971 (or 16967 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 123225784 is about 11100.7109682218. The cubic root of 123225784 is about 497.6230972381.

The spelling of 123225784 in words is "one hundred twenty-three million, two hundred twenty-five thousand, seven hundred eighty-four".