205434043 has 2 divisors, whose sum is σ = 205434044. Its totient is φ = 205434042.

The previous prime is 205434007. The next prime is 205434079. The reversal of 205434043 is 340434502.

It is a balanced prime because it is at equal distance from previous prime (205434007) and next prime (205434079).

It is a cyclic number.

It is not a de Polignac number, because 205434043 - 2⁹ = 205433531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205433999 and 205434017.

It is not a weakly prime, because it can be changed into another prime (205434083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102717021 + 102717022.

It is an arithmetic number, because the mean of its divisors is an integer number (102717022).

Almost surely, 2^205434043 is an apocalyptic number.

205434043 is a deficient number, since it is larger than the sum of its proper divisors (1).

205434043 is an equidigital number, since it uses as much as digits as its factorization.

205434043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 205434043 is about 14332.9704876554. The cubic root of 205434043 is about 590.0527033261.

Adding to 205434043 its reverse (340434502), we get a palindrome (545868545).

The spelling of 205434043 in words is "two hundred five million, four hundred thirty-four thousand, forty-three".