205342399 has 2 divisors, whose sum is σ = 205342400. Its totient is φ = 205342398.

The previous prime is 205342387. The next prime is 205342411. The reversal of 205342399 is 993243502.

It is a balanced prime because it is at equal distance from previous prime (205342387) and next prime (205342411).

It is a cyclic number.

It is not a de Polignac number, because 205342399 - 2¹⁵ = 205309631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205342349) 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, 102671199 + 102671200.

It is an arithmetic number, because the mean of its divisors is an integer number (102671200).

Almost surely, 2^205342399 is an apocalyptic number.

205342399 is a deficient number, since it is larger than the sum of its proper divisors (1).

205342399 is an equidigital number, since it uses as much as digits as its factorization.

205342399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 205342399 is about 14329.7731663833. The cubic root of 205342399 is about 589.9649495600.

The spelling of 205342399 in words is "two hundred five million, three hundred forty-two thousand, three hundred ninety-nine".