22440042424 has 16 divisors (see below), whose sum is σ = 42132025800. Its totient is φ = 11204835552.

The previous prime is 22440042419. The next prime is 22440042491. The reversal of 22440042424 is 42424004422.

It is a junction number, because it is equal to n+sod(n) for n = 22440042392 and 22440042401.

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, 1891927 + ... + 1903750.

Almost surely, 2^22440042424 is an apocalyptic number.

It is an amenable number.

22440042424 is a deficient number, since it is larger than the sum of its proper divisors (19691983376).

22440042424 is a wasteful number, since it uses less digits than its factorization.

22440042424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796422 (or 3796418 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 22440042424 its reverse (42424004422), we get a palindrome (64864046846).

The spelling of 22440042424 in words is "twenty-two billion, four hundred forty million, forty-two thousand, four hundred twenty-four".