164442 has 8 divisors (see below), whose sum is σ = 328896. Its totient is φ = 54812.

The previous prime is 164431. The next prime is 164443. The reversal of 164442 is 244461.

It is a sphenic number, since it is the product of 3 distinct primes.

164442 is an admirable number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (164443) by changing a digit.

164442 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 13698 + ... + 13709.

It is an arithmetic number, because the mean of its divisors is an integer number (41112).

2¹⁶⁴⁴⁴² is an apocalyptic number.

164442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164442 is a wasteful number, since it uses less digits than its factorization.

164442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27412.

The product of its digits is 768, while the sum is 21.

The square root of 164442 is about 405.5144880272. The cubic root of 164442 is about 54.7861669668.

It can be divided in two parts, 164 and 442, that added together give a palindrome (606).

The spelling of 164442 in words is "one hundred sixty-four thousand, four hundred forty-two".