205830442127 has 2 divisors, whose sum is σ = 205830442128. Its totient is φ = 205830442126.

The previous prime is 205830442093. The next prime is 205830442189. The reversal of 205830442127 is 721244038502.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205830442127 - 2⁸ = 205830441871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205830445127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102915221063 + 102915221064.

It is an arithmetic number, because the mean of its divisors is an integer number (102915221064).

Almost surely, 2^205830442127 is an apocalyptic number.

205830442127 is a deficient number, since it is larger than the sum of its proper divisors (1).

205830442127 is an equidigital number, since it uses as much as digits as its factorization.

205830442127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 38.

The spelling of 205830442127 in words is "two hundred five billion, eight hundred thirty million, four hundred forty-two thousand, one hundred twenty-seven".