442001 has 8 divisors (see below), whose sum is σ = 509184. Its totient is φ = 375840.

The previous prime is 441971. The next prime is 442003. The reversal of 442001 is 100244.

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 442001 - 2⁶ = 441937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442003) 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, 1496 + ... + 1766.

It is an arithmetic number, because the mean of its divisors is an integer number (63648).

2⁴⁴²⁰⁰¹ is an apocalyptic number.

It is an amenable number.

442001 is a deficient number, since it is larger than the sum of its proper divisors (67183).

442001 is a wasteful number, since it uses less digits than its factorization.

442001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 442001 is about 664.8315576144. The cubic root of 442001 is about 76.1741734774.

Adding to 442001 its reverse (100244), we get a palindrome (542245).

The spelling of 442001 in words is "four hundred forty-two thousand, one", and thus it is an iban number.