204140243 has 8 divisors (see below), whose sum is σ = 206950800. Its totient is φ = 201338208.

The previous prime is 204140231. The next prime is 204140257. The reversal of 204140243 is 342041402.

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 204140243 - 2¹⁰ = 204139219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204140213) 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, 57113 + ... + 60581.

It is an arithmetic number, because the mean of its divisors is an integer number (25868850).

Almost surely, 2^204140243 is an apocalyptic number.

204140243 is a deficient number, since it is larger than the sum of its proper divisors (2810557).

204140243 is an equidigital number, since it uses as much as digits as its factorization.

204140243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 204140243 is about 14287.7655005953. The cubic root of 204140243 is about 588.8113990928.

Adding to 204140243 its reverse (342041402), we get a palindrome (546181645).

The spelling of 204140243 in words is "two hundred four million, one hundred forty thousand, two hundred forty-three".