42404040424 has 32 divisors (see below), whose sum is σ = 79758642600. Its totient is φ = 21135136000.

The previous prime is 42404040397. The next prime is 42404040431.

42404040424 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 40638528100 + 1765512324 = 201590^2 + 42018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42404040392 and 42404040401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7705674 + ... + 7711174.

Almost surely, 2^42404040424 is an apocalyptic number.

It is an amenable number.

42404040424 is a deficient number, since it is larger than the sum of its proper divisors (37354602176).

42404040424 is a wasteful number, since it uses less digits than its factorization.

42404040424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8373 (or 8369 counting only the distinct ones).

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

It can be divided in two parts, 424040 and 40424, that added together give a palindrome (464464).

The spelling of 42404040424 in words is "forty-two billion, four hundred four million, forty thousand, four hundred twenty-four".