122745424 has 20 divisors (see below), whose sum is σ = 239559444. Its totient is φ = 60923648.

The previous prime is 122745419. The next prime is 122745437. The reversal of 122745424 is 424547221.

It can be written as a sum of positive squares in 2 ways, for example, as 60840000 + 61905424 = 7800^2 + 7868^2 .

It is a super-2 number, since 2×122745424² = 30132878225879552, which contains 22 as substring.

It is a congruent number.

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, 25807 + ... + 30190.

Almost surely, 2^122745424 is an apocalyptic number.

It is an amenable number.

122745424 is a deficient number, since it is larger than the sum of its proper divisors (116814020).

122745424 is a wasteful number, since it uses less digits than its factorization.

122745424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56142 (or 56136 counting only the distinct ones).

The product of its digits is 17920, while the sum is 31.

The square root of 122745424 is about 11079.0533891664. The cubic root of 122745424 is about 496.9756420689.

The spelling of 122745424 in words is "one hundred twenty-two million, seven hundred forty-five thousand, four hundred twenty-four".