122423912 has 16 divisors (see below), whose sum is σ = 247202340. Its totient is φ = 56503296.

The previous prime is 122423911. The next prime is 122423927. The reversal of 122423912 is 219324221.

It can be written as a sum of positive squares in 2 ways, for example, as 113507716 + 8916196 = 10654^2 + 2986^2 .

It is a super-2 number, since 2×122423912² = 29975228458767488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (122423911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588473 + ... + 588680.

Almost surely, 2^122423912 is an apocalyptic number.

It is an amenable number.

122423912 is an abundant number, since it is smaller than the sum of its proper divisors (124778428).

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

122423912 is a wasteful number, since it uses less digits than its factorization.

122423912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177172 (or 1177168 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 122423912 is about 11064.5339712073. The cubic root of 122423912 is about 496.5413465978.

The spelling of 122423912 in words is "one hundred twenty-two million, four hundred twenty-three thousand, nine hundred twelve".