204140420 has 48 divisors (see below), whose sum is σ = 495186048. Its totient is φ = 69864960.

The previous prime is 204140329. The next prime is 204140429. The reversal of 204140420 is 24041402.

204140420 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 2×204140420² = 83346622155552800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (204140429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23552 + ... + 31031.

It is an arithmetic number, because the mean of its divisors is an integer number (10316376).

Almost surely, 2^204140420 is an apocalyptic number.

204140420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204140420 is an abundant number, since it is smaller than the sum of its proper divisors (291045628).

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

204140420 is a wasteful number, since it uses less digits than its factorization.

204140420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54620 (or 54618 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 204140420 is about 14287.7716947045. The cubic root of 204140420 is about 588.8115692692.

Adding to 204140420 its reverse (24041402), we get a palindrome (228181822).

The spelling of 204140420 in words is "two hundred four million, one hundred forty thousand, four hundred twenty".