404042424 has 16 divisors (see below), whose sum is σ = 1010106120. Its totient is φ = 134680800.

The previous prime is 404042407. The next prime is 404042473. The reversal of 404042424 is 424240404.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 16835101 = 404042424 / (4 + 0 + 4 + 0 + 4 + 2 + 4 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 404042394 and 404042403.

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, 8417527 + ... + 8417574.

Almost surely, 2^404042424 is an apocalyptic number.

It is an amenable number.

404042424 is an abundant number, since it is smaller than the sum of its proper divisors (606063696).

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

404042424 is a wasteful number, since it uses less digits than its factorization.

404042424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16835110 (or 16835106 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 404042424 is about 20100.8065509820. The cubic root of 404042424 is about 739.2800546017.

Adding to 404042424 its reverse (424240404), we get a palindrome (828282828).

It can be divided in two parts, 4040 and 42424, that added together give a palindrome (46464).

The spelling of 404042424 in words is "four hundred four million, forty-two thousand, four hundred twenty-four".