442315 has 4 divisors (see below), whose sum is σ = 530784. Its totient is φ = 353848.

The previous prime is 442291. The next prime is 442319. The reversal of 442315 is 513244.

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

It is a cyclic number.

It is not a de Polignac number, because 442315 - 2⁵ = 442283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442292 and 442301.

It is not an unprimeable number, because it can be changed into a prime (442319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44227 + ... + 44236.

It is an arithmetic number, because the mean of its divisors is an integer number (132696).

2⁴⁴²³¹⁵ is an apocalyptic number.

442315 is a deficient number, since it is larger than the sum of its proper divisors (88469).

442315 is an equidigital number, since it uses as much as digits as its factorization.

442315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88468.

The product of its digits is 480, while the sum is 19.

The square root of 442315 is about 665.0676657303. The cubic root of 442315 is about 76.1922073949.

Adding to 442315 its reverse (513244), we get a palindrome (955559).

It can be divided in two parts, 442 and 315, that added together give a palindrome (757).

The spelling of 442315 in words is "four hundred forty-two thousand, three hundred fifteen".