205223242 has 16 divisors (see below), whose sum is σ = 353483712. Its totient is φ = 87534720.

The previous prime is 205223233. The next prime is 205223243. The reversal of 205223242 is 242322502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (205223243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31783 + ... + 37690.

It is an arithmetic number, because the mean of its divisors is an integer number (22092732).

Almost surely, 2^205223242 is an apocalyptic number.

205223242 is a deficient number, since it is larger than the sum of its proper divisors (148260470).

205223242 is a wasteful number, since it uses less digits than its factorization.

205223242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69693.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 205223242 is about 14325.6148908171. The cubic root of 205223242 is about 589.8508116520.

Adding to 205223242 its reverse (242322502), we get a palindrome (447545744).

The spelling of 205223242 in words is "two hundred five million, two hundred twenty-three thousand, two hundred forty-two".