442245 has 8 divisors (see below), whose sum is σ = 707616. Its totient is φ = 235856.

The previous prime is 442243. The next prime is 442271. The reversal of 442245 is 542244.

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 442245 - 2¹ = 442243 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14727 + ... + 14756.

It is an arithmetic number, because the mean of its divisors is an integer number (88452).

2⁴⁴²²⁴⁵ is an apocalyptic number.

It is an amenable number.

442245 is a deficient number, since it is larger than the sum of its proper divisors (265371).

442245 is a wasteful number, since it uses less digits than its factorization.

442245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29491.

The product of its digits is 1280, while the sum is 21.

The square root of 442245 is about 665.0150374240. The cubic root of 442245 is about 76.1881878343.

Adding to 442245 its reverse (542244), we get a palindrome (984489).

Subtracting 442245 from its reverse (542244), we obtain a palindrome (99999).

The spelling of 442245 in words is "four hundred forty-two thousand, two hundred forty-five".