204020021120240 has 160 divisors (see below), whose sum is σ = 538220151705600. Its totient is φ = 71355665323008.

The previous prime is 204020021120197. The next prime is 204020021120299. The reversal of 204020021120240 is 42021120020402.

204020021120240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38940440 + ... + 43867959.

It is an arithmetic number, because the mean of its divisors is an integer number (3363875948160).

Almost surely, 2^{204020021120240} is an apocalyptic number.

204020021120240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204020021120240 is an abundant number, since it is smaller than the sum of its proper divisors (334200130585360).

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

204020021120240 is a wasteful number, since it uses less digits than its factorization.

204020021120240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82808551 (or 82808545 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 204020021120240 its reverse (42021120020402), we get a palindrome (246041141140642).

The spelling of 204020021120240 in words is "two hundred four trillion, twenty billion, twenty-one million, one hundred twenty thousand, two hundred forty".