204142343 has 4 divisors (see below), whose sum is σ = 204407208. Its totient is φ = 203877480.

The previous prime is 204142331. The next prime is 204142349. The reversal of 204142343 is 343241402.

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 204142343 - 2¹⁸ = 203880199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204142349) 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, 131273 + ... + 132818.

It is an arithmetic number, because the mean of its divisors is an integer number (51101802).

Almost surely, 2^204142343 is an apocalyptic number.

204142343 is a deficient number, since it is larger than the sum of its proper divisors (264865).

204142343 is an equidigital number, since it uses as much as digits as its factorization.

204142343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264864.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 204142343 is about 14287.8389898543. The cubic root of 204142343 is about 588.8134181291.

Adding to 204142343 its reverse (343241402), we get a palindrome (547383745).

The spelling of 204142343 in words is "two hundred four million, one hundred forty-two thousand, three hundred forty-three".