404242422 has 16 divisors (see below), whose sum is σ = 856042992. Its totient is φ = 126821120.

The previous prime is 404242409. The next prime is 404242459. The reversal of 404242422 is 224242404.

It is a junction number, because it is equal to n+sod(n) for n = 404242392 and 404242401.

It is a congruent number.

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, 1981479 + ... + 1981682.

It is an arithmetic number, because the mean of its divisors is an integer number (53502687).

Almost surely, 2^404242422 is an apocalyptic number.

404242422 is an abundant number, since it is smaller than the sum of its proper divisors (451800570).

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

404242422 is a wasteful number, since it uses less digits than its factorization.

404242422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963183.

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

The square root of 404242422 is about 20105.7808105032. The cubic root of 404242422 is about 739.4020138603.

Adding to 404242422 its reverse (224242404), we get a palindrome (628484826).

It can be divided in two parts, 4042 and 42422, that added together give a palindrome (46464).

The spelling of 404242422 in words is "four hundred four million, two hundred forty-two thousand, four hundred twenty-two".