404123020242 has 16 divisors (see below), whose sum is σ = 810795716352. Its totient is φ = 134282727440.

The previous prime is 404123020237. The next prime is 404123020243. The reversal of 404123020242 is 242020321404.

It is not an unprimeable number, because it can be changed into a prime (404123020243) 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, 106234434 + ... + 106238237.

It is an arithmetic number, because the mean of its divisors is an integer number (50674732272).

Almost surely, 2^404123020242 is an apocalyptic number.

404123020242 is an abundant number, since it is smaller than the sum of its proper divisors (406672696110).

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

404123020242 is a wasteful number, since it uses less digits than its factorization.

404123020242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212472993.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 404123020242 its reverse (242020321404), we get a palindrome (646143341646).

The spelling of 404123020242 in words is "four hundred four billion, one hundred twenty-three million, twenty thousand, two hundred forty-two".