442630643 has 8 divisors (see below), whose sum is σ = 544776288. Its totient is φ = 350213184.

The previous prime is 442630637. The next prime is 442630651. The reversal of 442630643 is 346036244.

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

It is a cyclic number.

It is not a de Polignac number, because 442630643 - 2¹⁴ = 442614259 is a prime.

It is a super-2 number, since 2×442630643² = 391843772245186898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442630043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2431946 + ... + 2432127.

It is an arithmetic number, because the mean of its divisors is an integer number (68097036).

Almost surely, 2^442630643 is an apocalyptic number.

442630643 is a deficient number, since it is larger than the sum of its proper divisors (102145645).

442630643 is a wasteful number, since it uses less digits than its factorization.

442630643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864093.

The product of its (nonzero) digits is 41472, while the sum is 32.

The square root of 442630643 is about 21038.7890098266. The cubic root of 442630643 is about 762.1032707471.

Adding to 442630643 its reverse (346036244), we get a palindrome (788666887).

The spelling of 442630643 in words is "four hundred forty-two million, six hundred thirty thousand, six hundred forty-three".