42027 has 4 divisors (see below), whose sum is σ = 56040. Its totient is φ = 28016.

The previous prime is 42023. The next prime is 42043. The reversal of 42027 is 72024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42027 - 2² = 42023 is a prime.

It is a D-number.

It is a plaindrome in base 7 and base 14.

It is a junction number, because it is equal to n+sod(n) for n = 41997 and 42015.

It is not an unprimeable number, because it can be changed into a prime (42023) 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, 7002 + ... + 7007.

It is an arithmetic number, because the mean of its divisors is an integer number (14010).

2⁴²⁰²⁷ is an apocalyptic number.

42027 is a deficient number, since it is larger than the sum of its proper divisors (14013).

42027 is a wasteful number, since it uses less digits than its factorization.

42027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14012.

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

The square root of 42027 is about 205.0048779907. The cubic root of 42027 is about 34.7677134818.

The spelling of 42027 in words is "forty-two thousand, twenty-seven", and thus it is an iban number.