205304043 has 16 divisors (see below), whose sum is σ = 316362240. Its totient is φ = 115997376.

The previous prime is 205304039. The next prime is 205304093. The reversal of 205304043 is 340403502.

It is a happy number.

It is not a de Polignac number, because 205304043 - 2² = 205304039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (205304093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53055 + ... + 56792.

It is an arithmetic number, because the mean of its divisors is an integer number (19772640).

Almost surely, 2^205304043 is an apocalyptic number.

205304043 is a deficient number, since it is larger than the sum of its proper divisors (111058197).

205304043 is a wasteful number, since it uses less digits than its factorization.

205304043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109946.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 205304043 is about 14328.4347714606. The cubic root of 205304043 is about 589.9282139990.

Adding to 205304043 its reverse (340403502), we get a palindrome (545707545).

The spelling of 205304043 in words is "two hundred five million, three hundred four thousand, forty-three".