204341405 has 4 divisors (see below), whose sum is σ = 245209692. Its totient is φ = 163473120.

The previous prime is 204341387. The next prime is 204341441. The reversal of 204341405 is 504143402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61371556 + 142969849 = 7834^2 + 11957^2 .

It is not a de Polignac number, because 204341405 - 2¹⁸ = 204079261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20434136 + ... + 20434145.

It is an arithmetic number, because the mean of its divisors is an integer number (61302423).

Almost surely, 2^204341405 is an apocalyptic number.

It is an amenable number.

204341405 is a deficient number, since it is larger than the sum of its proper divisors (40868287).

204341405 is an equidigital number, since it uses as much as digits as its factorization.

204341405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40868286.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 204341405 is about 14294.8034264204. The cubic root of 204341405 is about 589.0047426362.

Adding to 204341405 its reverse (504143402), we get a palindrome (708484807).

The spelling of 204341405 in words is "two hundred four million, three hundred forty-one thousand, four hundred five".