42220431424 has 28 divisors (see below), whose sum is σ = 83805437164. Its totient is φ = 21104100864.

The previous prime is 42220431353. The next prime is 42220431443. The reversal of 42220431424 is 42413402224.

It can be written as a sum of positive squares in 2 ways, for example, as 31244097600 + 10976333824 = 176760^2 + 104768^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42220431392 and 42220431401.

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, 131302 + ... + 318874.

Almost surely, 2^42220431424 is an apocalyptic number.

It is an amenable number.

42220431424 is a deficient number, since it is larger than the sum of its proper divisors (41585005740).

42220431424 is a wasteful number, since it uses less digits than its factorization.

42220431424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191102 (or 191092 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 42220431424 its reverse (42413402224), we get a palindrome (84633833648).

It can be divided in two parts, 422204 and 31424, that added together give a triangular number (453628 = T₉₅₂).

The spelling of 42220431424 in words is "forty-two billion, two hundred twenty million, four hundred thirty-one thousand, four hundred twenty-four".