204400041 has 4 divisors (see below), whose sum is σ = 272533392. Its totient is φ = 136266692.

The previous prime is 204400037. The next prime is 204400109. The reversal of 204400041 is 140004402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204400041 - 2² = 204400037 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204400541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34066671 + ... + 34066676.

It is an arithmetic number, because the mean of its divisors is an integer number (68133348).

Almost surely, 2^204400041 is an apocalyptic number.

It is an amenable number.

204400041 is a deficient number, since it is larger than the sum of its proper divisors (68133351).

204400041 is an equidigital number, since it uses as much as digits as its factorization.

204400041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68133350.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 204400041 is about 14296.8542344111. The cubic root of 204400041 is about 589.0610757765.

Adding to 204400041 its reverse (140004402), we get a palindrome (344404443).

It can be divided in two parts, 20 and 4400041, that added together give a triangular number (4400061 = T₂₉₆₆).

The spelling of 204400041 in words is "two hundred four million, four hundred thousand, forty-one".