204420443 has 4 divisors (see below), whose sum is σ = 204493440. Its totient is φ = 204347448.

The previous prime is 204420421. The next prime is 204420467. The reversal of 204420443 is 344024402.

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

It is a cyclic number.

It is not a de Polignac number, because 204420443 - 2⁶ = 204420379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204420473) 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, 32123 + ... + 37956.

It is an arithmetic number, because the mean of its divisors is an integer number (51123360).

Almost surely, 2^204420443 is an apocalyptic number.

204420443 is a deficient number, since it is larger than the sum of its proper divisors (72997).

204420443 is an equidigital number, since it uses as much as digits as its factorization.

204420443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72996.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 204420443 is about 14297.5677302120. The cubic root of 204420443 is about 589.0806739856.

Adding to 204420443 its reverse (344024402), we get a palindrome (548444845).

The spelling of 204420443 in words is "two hundred four million, four hundred twenty thousand, four hundred forty-three".