404013042 has 16 divisors (see below), whose sum is σ = 897806880. Its totient is φ = 134670996.

The previous prime is 404013037. The next prime is 404013067. The reversal of 404013042 is 240310404.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 3740808 + ... + 3740915.

It is an arithmetic number, because the mean of its divisors is an integer number (56112930).

Almost surely, 2^404013042 is an apocalyptic number.

404013042 is an abundant number, since it is smaller than the sum of its proper divisors (493793838).

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

404013042 is a wasteful number, since it uses less digits than its factorization.

404013042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7481734 (or 7481728 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 404013042 is about 20100.0756714993. The cubic root of 404013042 is about 739.2621339975.

Adding to 404013042 its reverse (240310404), we get a palindrome (644323446).

The spelling of 404013042 in words is "four hundred four million, thirteen thousand, forty-two".