82442 has 4 divisors (see below), whose sum is σ = 123666.
Its totient is φ = 41220.
The previous prime is 82421. The next prime is 82457. The reversal of 82442 is 24428.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 78961 + 3481 = 281^2 + 59^2
It is a d-powerful number, because it can be written as 8 + 2 + 47 + 48 + 29 .
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20609 + ... + 20612.
282442 is an apocalyptic number.
82442 is a deficient number, since it is larger than the sum of its proper divisors (41224).
82442 is a wasteful number, since it uses less digits than its factorization.
82442 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 41223.
The product of its digits is 512, while the sum is 20.
The square root of 82442 is about 287.1271495348.
The cubic root of 82442 is about 43.5227344059.
The spelling of 82442 in words is "eighty-two thousand, four hundred forty-two".