204112143 has 30 divisors (see below), whose sum is σ = 319129272. Its totient is φ = 129765240.

The previous prime is 204112127. The next prime is 204112163. The reversal of 204112143 is 341211402.

It is not a de Polignac number, because 204112143 - 2⁴ = 204112127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204112163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 616488 + ... + 616818.

Almost surely, 2^204112143 is an apocalyptic number.

204112143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

204112143 is a deficient number, since it is larger than the sum of its proper divisors (115017129).

204112143 is an frugal number, since it uses more digits than its factorization.

204112143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 204112143 is about 14286.7821079486. The cubic root of 204112143 is about 588.7843811315.

Adding to 204112143 its reverse (341211402), we get a palindrome (545323545).

The spelling of 204112143 in words is "two hundred four million, one hundred twelve thousand, one hundred forty-three".