27042843 has 4 divisors (see below), whose sum is σ = 36057128. Its totient is φ = 18028560.

The previous prime is 27042823. The next prime is 27042853. The reversal of 27042843 is 34824072.

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

It is not a de Polignac number, because 27042843 - 2⁹ = 27042331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27042843.

It is not an unprimeable number, because it can be changed into a prime (27042803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4507138 + ... + 4507143.

It is an arithmetic number, because the mean of its divisors is an integer number (9014282).

Almost surely, 2^27042843 is an apocalyptic number.

27042843 is a deficient number, since it is larger than the sum of its proper divisors (9014285).

27042843 is an equidigital number, since it uses as much as digits as its factorization.

27042843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9014284.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 27042843 is about 5200.2733581995. The cubic root of 27042843 is about 300.1585939229.

The spelling of 27042843 in words is "twenty-seven million, forty-two thousand, eight hundred forty-three".