442440242 has 8 divisors (see below), whose sum is σ = 663806316. Its totient is φ = 221171472.

The previous prime is 442440241. The next prime is 442440301. The reversal of 442440242 is 242044244.

It can be written as a sum of positive squares in 2 ways, for example, as 441462121 + 978121 = 21011^2 + 989^2 .

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

It is not an unprimeable number, because it can be changed into a prime (442440241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11633 + ... + 31940.

Almost surely, 2^442440242 is an apocalyptic number.

442440242 is a deficient number, since it is larger than the sum of its proper divisors (221366074).

442440242 is a wasteful number, since it uses less digits than its factorization.

442440242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48652.

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 442440242 is about 21034.2635240695. The cubic root of 442440242 is about 761.9939801997.

Adding to 442440242 its reverse (242044244), we get a palindrome (684484486).

The spelling of 442440242 in words is "four hundred forty-two million, four hundred forty thousand, two hundred forty-two".