204442143 has 4 divisors (see below), whose sum is σ = 272589528. Its totient is φ = 136294760.

The previous prime is 204442127. The next prime is 204442159. The reversal of 204442143 is 341244402.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (204442127) and next prime (204442159).

It is a cyclic number.

It is not a de Polignac number, because 204442143 - 2⁴ = 204442127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204442643) 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, 34073688 + ... + 34073693.

It is an arithmetic number, because the mean of its divisors is an integer number (68147382).

Almost surely, 2^204442143 is an apocalyptic number.

204442143 is a deficient number, since it is larger than the sum of its proper divisors (68147385).

204442143 is an equidigital number, since it uses as much as digits as its factorization.

204442143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68147384.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 204442143 is about 14298.3265804079. The cubic root of 204442143 is about 589.1015176256.

Adding to 204442143 its reverse (341244402), we get a palindrome (545686545).

The spelling of 204442143 in words is "two hundred four million, four hundred forty-two thousand, one hundred forty-three".