122256424 has 16 divisors (see below), whose sum is σ = 234822420. Its totient is φ = 59637120.

The previous prime is 122256419. The next prime is 122256457. The reversal of 122256424 is 424652221.

It can be written as a sum of positive squares in 2 ways, for example, as 121220100 + 1036324 = 11010^2 + 1018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122256392 and 122256401.

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 3 ways as a sum of consecutive naturals, for example, 186039 + ... + 186694.

Almost surely, 2^122256424 is an apocalyptic number.

It is an amenable number.

122256424 is a deficient number, since it is larger than the sum of its proper divisors (112565996).

122256424 is a wasteful number, since it uses less digits than its factorization.

122256424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372780 (or 372776 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 122256424 is about 11056.9626932535. The cubic root of 122256424 is about 496.3148040583.

The spelling of 122256424 in words is "one hundred twenty-two million, two hundred fifty-six thousand, four hundred twenty-four".