442630415 has 8 divisors (see below), whose sum is σ = 531929328. Its totient is φ = 353589120.

The previous prime is 442630381. The next prime is 442630417. The reversal of 442630415 is 514036244.

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

It is not a de Polignac number, because 442630415 - 2⁶ = 442630351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442630417) 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 7 ways as a sum of consecutive naturals, for example, 60602 + ... + 67511.

It is an arithmetic number, because the mean of its divisors is an integer number (66491166).

Almost surely, 2^442630415 is an apocalyptic number.

442630415 is a deficient number, since it is larger than the sum of its proper divisors (89298913).

442630415 is a wasteful number, since it uses less digits than its factorization.

442630415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128809.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 442630415 is about 21038.7835912631. The cubic root of 442630415 is about 762.1031398934.

Adding to 442630415 its reverse (514036244), we get a palindrome (956666659).

The spelling of 442630415 in words is "four hundred forty-two million, six hundred thirty thousand, four hundred fifteen".