204005143 has 8 divisors (see below), whose sum is σ = 207081008. Its totient is φ = 200937024.

The previous prime is 204005129. The next prime is 204005159. The reversal of 204005143 is 341500402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204005143 - 2⁹ = 204004631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204005143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204005173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71380 + ... + 74182.

It is an arithmetic number, because the mean of its divisors is an integer number (25885126).

Almost surely, 2^204005143 is an apocalyptic number.

204005143 is a deficient number, since it is larger than the sum of its proper divisors (3075865).

204005143 is an equidigital number, since it uses as much as digits as its factorization.

204005143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 204005143 is about 14283.0368969628. The cubic root of 204005143 is about 588.6814786458.

Adding to 204005143 its reverse (341500402), we get a palindrome (545505545).

The spelling of 204005143 in words is "two hundred four million, five thousand, one hundred forty-three".