204247242 has 48 divisors (see below), whose sum is σ = 455749632. Its totient is φ = 66074400.

The previous prime is 204247229. The next prime is 204247243. The reversal of 204247242 is 242742402.

It is not an unprimeable number, because it can be changed into a prime (204247243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106492 + ... + 108392.

It is an arithmetic number, because the mean of its divisors is an integer number (9494784).

Almost surely, 2^204247242 is an apocalyptic number.

204247242 is an abundant number, since it is smaller than the sum of its proper divisors (251502390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204247242 is a wasteful number, since it uses less digits than its factorization.

204247242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083 (or 2080 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 204247242 is about 14291.5094374247. The cubic root of 204247242 is about 588.9142552237.

Adding to 204247242 its reverse (242742402), we get a palindrome (446989644).

It can be divided in two parts, 2042 and 47242, that added together give a square (49284 = 222²).

The spelling of 204247242 in words is "two hundred four million, two hundred forty-seven thousand, two hundred forty-two".