27042 has 8 divisors (see below), whose sum is σ = 54096. Its totient is φ = 9012.

The previous prime is 27031. The next prime is 27043. The reversal of 27042 is 24072.

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

27042 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 27042.

It is not an unprimeable number, because it can be changed into a prime (27043) by changing a digit.

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, 2248 + ... + 2259.

It is an arithmetic number, because the mean of its divisors is an integer number (6762).

2²⁷⁰⁴² is an apocalyptic number.

27042 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.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27048).

27042 is a wasteful number, since it uses less digits than its factorization.

27042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 27042 is about 164.4445195195. Note that the first 3 decimals coincide. The cubic root of 27042 is about 30.0155474967.

The spelling of 27042 in words is "twenty-seven thousand, forty-two", and thus it is an iban number.