204434143 has 4 divisors (see below), whose sum is σ = 213322608. Its totient is φ = 195545680.

The previous prime is 204434123. The next prime is 204434149. The reversal of 204434143 is 341434402.

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 204434143 - 2¹³ = 204425951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204434149) 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, 4444198 + ... + 4444243.

It is an arithmetic number, because the mean of its divisors is an integer number (53330652).

Almost surely, 2^204434143 is an apocalyptic number.

204434143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

204434143 is a deficient number, since it is larger than the sum of its proper divisors (8888465).

204434143 is an equidigital number, since it uses as much as digits as its factorization.

204434143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8888464.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 204434143 is about 14298.0468246541. The cubic root of 204434143 is about 589.0938335060.

Adding to 204434143 its reverse (341434402), we get a palindrome (545868545).

The spelling of 204434143 in words is "two hundred four million, four hundred thirty-four thousand, one hundred forty-three".