27442 has 4 divisors (see below), whose sum is σ = 41166. Its totient is φ = 13720.

The previous prime is 27437. The next prime is 27449. The reversal of 27442 is 24472.

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., 25921 + 1521 = 161^2 + 39^2 .

It is not an unprimeable number, because it can be changed into a prime (27449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6859 + ... + 6862.

2²⁷⁴⁴² is an apocalyptic number.

27442 is a deficient number, since it is larger than the sum of its proper divisors (13724).

27442 is a wasteful number, since it uses less digits than its factorization.

27442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13723.

The product of its digits is 448, while the sum is 19.

The square root of 27442 is about 165.6562706329. The cubic root of 27442 is about 30.1628184436.

It can be divided in two parts, 2 and 7442, that multiplied together give a square (14884 = 122²).

The spelling of 27442 in words is "twenty-seven thousand, four hundred forty-two", and thus it is an iban number.