243004442 has 4 divisors (see below), whose sum is σ = 364506666. Its totient is φ = 121502220.

The previous prime is 243004441. The next prime is 243004457. The reversal of 243004442 is 244400342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 132733441 + 110271001 = 11521^2 + 10501^2 .

It is not an unprimeable number, because it can be changed into a prime (243004441) 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 as a sum of consecutive naturals, namely, 60751109 + ... + 60751112.

Almost surely, 2^243004442 is an apocalyptic number.

243004442 is a deficient number, since it is larger than the sum of its proper divisors (121502224).

243004442 is a wasteful number, since it uses less digits than its factorization.

243004442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121502223.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 243004442 is about 15588.5997446852. The cubic root of 243004442 is about 624.0289492514.

Adding to 243004442 its reverse (244400342), we get a palindrome (487404784).

The spelling of 243004442 in words is "two hundred forty-three million, four thousand, four hundred forty-two".