442255 has 24 divisors (see below), whose sum is σ = 632016. Its totient is φ = 295680.

The previous prime is 442243. The next prime is 442271. The reversal of 442255 is 552244.

It is not a de Polignac number, because 442255 - 2¹¹ = 440207 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10264 + ... + 10306.

It is an arithmetic number, because the mean of its divisors is an integer number (26334).

2⁴⁴²²⁵⁵ is an apocalyptic number.

442255 is a deficient number, since it is larger than the sum of its proper divisors (189761).

442255 is a wasteful number, since it uses less digits than its factorization.

442255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 76 counting only the distinct ones).

The product of its digits is 1600, while the sum is 22.

The square root of 442255 is about 665.0225560084. The cubic root of 442255 is about 76.1887620832.

Adding to 442255 its reverse (552244), we get a palindrome (994499).

The spelling of 442255 in words is "four hundred forty-two thousand, two hundred fifty-five".