202042420404 has 96 divisors (see below), whose sum is σ = 519750508032. Its totient is φ = 60575760000.

The previous prime is 202042420399. The next prime is 202042420417. The reversal of 202042420404 is 404024240202.

202042420404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×202042420404² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22219899 + ... + 22228989.

It is an arithmetic number, because the mean of its divisors is an integer number (5414067792).

Almost surely, 2^202042420404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202042420404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259875254016).

202042420404 is an abundant number, since it is smaller than the sum of its proper divisors (317708087628).

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

202042420404 is a wasteful number, since it uses less digits than its factorization.

202042420404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10877 (or 10875 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 202042420404 its reverse (404024240202), we get a palindrome (606066660606).

It can be divided in two parts, 2020 and 42420404, that added together give a palindrome (42422424).

The spelling of 202042420404 in words is "two hundred two billion, forty-two million, four hundred twenty thousand, four hundred four".