404242140222042 has 16 divisors (see below), whose sum is σ = 856042179293952. Its totient is φ = 126821063599040.

The previous prime is 404242140221939. The next prime is 404242140222047. The reversal of 404242140222042 is 240222041242404.

It is a junction number, because it is equal to n+sod(n) for n = 404242140221994 and 404242140222012.

It is not an unprimeable number, because it can be changed into a prime (404242140222047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1981579118634 + ... + 1981579118837.

It is an arithmetic number, because the mean of its divisors is an integer number (53502636205872).

Almost surely, 2^{404242140222042} is an apocalyptic number.

404242140222042 is an abundant number, since it is smaller than the sum of its proper divisors (451800039071910).

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

404242140222042 is a wasteful number, since it uses less digits than its factorization.

404242140222042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963158237493.

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 404242140222042 its reverse (240222041242404), we get a palindrome (644464181464446).

The spelling of 404242140222042 in words is "four hundred four trillion, two hundred forty-two billion, one hundred forty million, two hundred twenty-two thousand, forty-two".