205023043 has 8 divisors (see below), whose sum is σ = 217995840. Its totient is φ = 192151680.

The previous prime is 205023041. The next prime is 205023059. The reversal of 205023043 is 340320502.

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

It is not a de Polignac number, because 205023043 - 2¹ = 205023041 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 205023043.

It is not an unprimeable number, because it can be changed into a prime (205023041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21168 + ... + 29293.

It is an arithmetic number, because the mean of its divisors is an integer number (27249480).

Almost surely, 2^205023043 is an apocalyptic number.

205023043 is a deficient number, since it is larger than the sum of its proper divisors (12972797).

205023043 is a wasteful number, since it uses less digits than its factorization.

205023043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50717.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 205023043 is about 14318.6257371299. The cubic root of 205023043 is about 589.6589458555.

Adding to 205023043 its reverse (340320502), we get a palindrome (545343545).

The spelling of 205023043 in words is "two hundred five million, twenty-three thousand, forty-three".