122520424 has 32 divisors (see below), whose sum is σ = 248348520. Its totient is φ = 56330496.

The previous prime is 122520413. The next prime is 122520427. The reversal of 122520424 is 424025221.

It can be written as a sum of positive squares in 4 ways, for example, as 36216324 + 86304100 = 6018^2 + 9290^2 .

It is a super-2 number, since 2×122520424² = 30022508594279552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122520395 and 122520404.

It is not an unprimeable number, because it can be changed into a prime (122520427) by changing a digit.

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, 26682 + ... + 30934.

Almost surely, 2^122520424 is an apocalyptic number.

It is an amenable number.

122520424 is an abundant number, since it is smaller than the sum of its proper divisors (125828096).

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

122520424 is a wasteful number, since it uses less digits than its factorization.

122520424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549 (or 4545 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 122520424 is about 11068.8944344049. The cubic root of 122520424 is about 496.6717939103.

Adding to 122520424 its reverse (424025221), we get a palindrome (546545645).

The spelling of 122520424 in words is "one hundred twenty-two million, five hundred twenty thousand, four hundred twenty-four".