404024200040 has 16 divisors (see below), whose sum is σ = 909054450180. Its totient is φ = 161609680000.

The previous prime is 404024200009. The next prime is 404024200067. The reversal of 404024200040 is 40002420404.

It can be written as a sum of positive squares in 2 ways, for example, as 365853200164 + 38170999876 = 604858^2 + 195374^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 404024199985 and 404024200021.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5050302461 + ... + 5050302540.

Almost surely, 2^404024200040 is an apocalyptic number.

404024200040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404024200040 is an abundant number, since it is smaller than the sum of its proper divisors (505030250140).

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

404024200040 is a wasteful number, since it uses less digits than its factorization.

404024200040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100605012 (or 10100605008 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 404024200040 its reverse (40002420404), we get a palindrome (444026620444).

The spelling of 404024200040 in words is "four hundred four billion, twenty-four million, two hundred thousand, forty".