67442 has 4 divisors (see below), whose sum is σ = 101166. Its totient is φ = 33720.

The previous prime is 67433. The next prime is 67447. The reversal of 67442 is 24476.

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., 67081 + 361 = 259^2 + 19^2 .

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (67447) by changing a digit.

67442 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16859 + ... + 16862.

2⁶⁷⁴⁴² is an apocalyptic number.

67442 is a deficient number, since it is larger than the sum of its proper divisors (33724).

67442 is a wasteful number, since it uses less digits than its factorization.

67442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33723.

The product of its digits is 1344, while the sum is 23.

The square root of 67442 is about 259.6959760951. The cubic root of 67442 is about 40.7045989648.

Adding to 67442 its product of digits (1344), we get a palindrome (68786).

The spelling of 67442 in words is "sixty-seven thousand, four hundred forty-two".