442642865 has 8 divisors (see below), whose sum is σ = 607053120. Its totient is φ = 303526512.

The previous prime is 442642861. The next prime is 442642891. The reversal of 442642865 is 568246244.

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 442642865 - 2² = 442642861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442642861) 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, 6323435 + ... + 6323504.

It is an arithmetic number, because the mean of its divisors is an integer number (75881640).

Almost surely, 2^442642865 is an apocalyptic number.

It is an amenable number.

442642865 is a deficient number, since it is larger than the sum of its proper divisors (164410255).

442642865 is a wasteful number, since it uses less digits than its factorization.

442642865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12646951.

The product of its digits is 368640, while the sum is 41.

The square root of 442642865 is about 21039.0794713077. The cubic root of 442642865 is about 762.1102851285.

The spelling of 442642865 in words is "four hundred forty-two million, six hundred forty-two thousand, eight hundred sixty-five".