204040042312240 has 40 divisors (see below), whose sum is σ = 474428665224720. Its totient is φ = 81609897897216.

The previous prime is 204040042312213. The next prime is 204040042312313. The reversal of 204040042312240 is 42213240040402.

204040042312240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 204040042312199 and 204040042312208.

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, 94536019 + ... + 96670258.

It is an arithmetic number, because the mean of its divisors is an integer number (11860716630618).

Almost surely, 2^{204040042312240} is an apocalyptic number.

204040042312240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204040042312240 is an abundant number, since it is smaller than the sum of its proper divisors (270388622912480).

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

204040042312240 is a wasteful number, since it uses less digits than its factorization.

204040042312240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191219629 (or 191219623 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 204040042312240 its reverse (42213240040402), we get a palindrome (246253282352642).

The spelling of 204040042312240 in words is "two hundred four trillion, forty billion, forty-two million, three hundred twelve thousand, two hundred forty".