27042613 has 4 divisors (see below), whose sum is σ = 29122828. Its totient is φ = 24962400.

The previous prime is 27042601. The next prime is 27042619. The reversal of 27042613 is 31624072.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3452164 + 23590449 = 1858^2 + 4857^2 .

It is a cyclic number.

It is not a de Polignac number, because 27042613 - 2⁹ = 27042101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27042619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040088 + ... + 1040113.

It is an arithmetic number, because the mean of its divisors is an integer number (7280707).

Almost surely, 2^27042613 is an apocalyptic number.

It is an amenable number.

27042613 is a deficient number, since it is larger than the sum of its proper divisors (2080215).

27042613 is a wasteful number, since it uses less digits than its factorization.

27042613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080214.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 27042613 is about 5200.2512439304. The cubic root of 27042613 is about 300.1577429686.

Adding to 27042613 its reverse (31624072), we get a palindrome (58666685).

The spelling of 27042613 in words is "twenty-seven million, forty-two thousand, six hundred thirteen".