442215 has 24 divisors (see below), whose sum is σ = 793728. Its totient is φ = 227520.

The previous prime is 442207. The next prime is 442217. The reversal of 442215 is 512244.

It is not a de Polignac number, because 442215 - 2³ = 442207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1237 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (33072).

2⁴⁴²²¹⁵ is an apocalyptic number.

442215 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

442215 is a deficient number, since it is larger than the sum of its proper divisors (351513).

442215 is a wasteful number, since it uses less digits than its factorization.

442215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 356 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 442215 is about 664.9924811605. The cubic root of 442215 is about 76.1864650356.

Adding to 442215 its reverse (512244), we get a palindrome (954459).

The spelling of 442215 in words is "four hundred forty-two thousand, two hundred fifteen".