205427 has 2 divisors, whose sum is σ = 205428. Its totient is φ = 205426.

The previous prime is 205423. The next prime is 205433. The reversal of 205427 is 724502.

205427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205427 - 2² = 205423 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 205399 and 205408.

It is not a weakly prime, because it can be changed into another prime (205421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102713 + 102714.

It is an arithmetic number, because the mean of its divisors is an integer number (102714).

2²⁰⁵⁴²⁷ is an apocalyptic number.

205427 is a deficient number, since it is larger than the sum of its proper divisors (1).

205427 is an equidigital number, since it uses as much as digits as its factorization.

205427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 205427 is about 453.2405542314. The cubic root of 205427 is about 59.0045960223.

Adding to 205427 its reverse (724502), we get a palindrome (929929).

The spelling of 205427 in words is "two hundred five thousand, four hundred twenty-seven".