404101011042 has 24 divisors (see below), whose sum is σ = 875865332316. Its totient is φ = 134652161376.

The previous prime is 404101010993. The next prime is 404101011047. The reversal of 404101011042 is 240110101404.

It can be written as a sum of positive squares in 2 ways, for example, as 388242394281 + 15858616761 = 623091^2 + 125931^2 .

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

It is not an unprimeable number, because it can be changed into a prime (404101011047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3962893 + ... + 4063584.

Almost surely, 2^404101011042 is an apocalyptic number.

404101011042 is an abundant number, since it is smaller than the sum of its proper divisors (471764321274).

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

404101011042 is a wasteful number, since it uses less digits than its factorization.

404101011042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029282 (or 8029279 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 404101011042 its reverse (240110101404), we get a palindrome (644211112446).

The spelling of 404101011042 in words is "four hundred four billion, one hundred one million, eleven thousand, forty-two".