205442223 has 8 divisors (see below), whose sum is σ = 313054848. Its totient is φ = 117395544.

The previous prime is 205442213. The next prime is 205442287. The reversal of 205442223 is 322244502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205442223 - 2¹⁶ = 205376687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205442193 and 205442202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205442213) 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 in 7 ways as a sum of consecutive naturals, for example, 4891461 + ... + 4891502.

It is an arithmetic number, because the mean of its divisors is an integer number (39131856).

Almost surely, 2^205442223 is an apocalyptic number.

205442223 is a deficient number, since it is larger than the sum of its proper divisors (107612625).

205442223 is an equidigital number, since it uses as much as digits as its factorization.

205442223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9782973.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 205442223 is about 14333.2558408758. The cubic root of 205442223 is about 590.0605348211.

Adding to 205442223 its reverse (322244502), we get a palindrome (527686725).

The spelling of 205442223 in words is "two hundred five million, four hundred forty-two thousand, two hundred twenty-three".