27042747 has 4 divisors (see below), whose sum is σ = 36057000. Its totient is φ = 18028496.

The previous prime is 27042731. The next prime is 27042749. The reversal of 27042747 is 74724072.

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 27042747 - 2⁴ = 27042731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27042749) 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, 4507122 + ... + 4507127.

It is an arithmetic number, because the mean of its divisors is an integer number (9014250).

Almost surely, 2^27042747 is an apocalyptic number.

27042747 is a deficient number, since it is larger than the sum of its proper divisors (9014253).

27042747 is an equidigital number, since it uses as much as digits as its factorization.

27042747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9014252.

The product of its (nonzero) digits is 21952, while the sum is 33.

The square root of 27042747 is about 5200.2641279074. The cubic root of 27042747 is about 300.1582387425.

The spelling of 27042747 in words is "twenty-seven million, forty-two thousand, seven hundred forty-seven".