442545 has 16 divisors (see below), whose sum is σ = 716352. Its totient is φ = 233280.

The previous prime is 442537. The next prime is 442571. The reversal of 442545 is 545244.

It is not a de Polignac number, because 442545 - 2³ = 442537 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2355 + ... + 2535.

It is an arithmetic number, because the mean of its divisors is an integer number (44772).

2⁴⁴²⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

442545 is a deficient number, since it is larger than the sum of its proper divisors (273807).

442545 is a wasteful number, since it uses less digits than its factorization.

442545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its digits is 3200, while the sum is 24.

The square root of 442545 is about 665.2405579939. The cubic root of 442545 is about 76.2054115376.

Adding to 442545 its reverse (545244), we get a palindrome (987789).

The spelling of 442545 in words is "four hundred forty-two thousand, five hundred forty-five".