404021113002 has 64 divisors (see below), whose sum is σ = 967809870720. Its totient is φ = 124195680000.

The previous prime is 404021112997. The next prime is 404021113009. The reversal of 404021113002 is 200311120404.

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 (404021113009) 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 31 ways as a sum of consecutive naturals, for example, 464002 + ... + 1011602.

It is an arithmetic number, because the mean of its divisors is an integer number (15122029230).

Almost surely, 2^404021113002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404021113002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483904935360).

404021113002 is an abundant number, since it is smaller than the sum of its proper divisors (563788757718).

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

404021113002 is a wasteful number, since it uses less digits than its factorization.

404021113002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548676 (or 548670 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 404021113002 its reverse (200311120404), we get a palindrome (604332233406).

The spelling of 404021113002 in words is "four hundred four billion, twenty-one million, one hundred thirteen thousand, two".