442465 has 4 divisors (see below), whose sum is σ = 530964. Its totient is φ = 353968.

The previous prime is 442457. The next prime is 442469. The reversal of 442465 is 564244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96721 + 345744 = 311^2 + 588^2 .

It is a cyclic number.

It is not a de Polignac number, because 442465 - 2³ = 442457 is a prime.

It is a Duffinian number.

442465 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (442469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44242 + ... + 44251.

It is an arithmetic number, because the mean of its divisors is an integer number (132741).

2⁴⁴²⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

442465 is a deficient number, since it is larger than the sum of its proper divisors (88499).

442465 is an equidigital number, since it uses as much as digits as its factorization.

442465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88498.

The product of its digits is 3840, while the sum is 25.

The square root of 442465 is about 665.1804266513. The cubic root of 442465 is about 76.2008193113.

It can be divided in two parts, 4424 and 65, that added together give a square (4489 = 67²).

The spelling of 442465 in words is "four hundred forty-two thousand, four hundred sixty-five".