122422128 has 40 divisors (see below), whose sum is σ = 318217728. Its totient is φ = 40554432.

The previous prime is 122422099. The next prime is 122422141. The reversal of 122422128 is 821224221.

122422128 is a nontrivial binomial coefficient, being equal to C(15648, 2).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 122422098 and 122422107.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1 + ... + 15647.

Almost surely, 2^122422128 is an apocalyptic number.

122422128 is the 15647-th triangular number and also the 7824-th hexagonal number.

It is an amenable number.

122422128 is an abundant number, since it is smaller than the sum of its proper divisors (195795600).

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

122422128 is a wasteful number, since it uses less digits than its factorization.

122422128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15821 (or 15815 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

The square root of 122422128 is about 11064.4533529678. The cubic root of 122422128 is about 496.5389346669.

Adding to 122422128 its reverse (821224221), we get a palindrome (943646349).

The spelling of 122422128 in words is "one hundred twenty-two million, four hundred twenty-two thousand, one hundred twenty-eight".