27420013 has 2 divisors, whose sum is σ = 27420014. Its totient is φ = 27420012.

The previous prime is 27420007. The next prime is 27420017. The reversal of 27420013 is 31002472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21650409 + 5769604 = 4653^2 + 2402^2 .

It is a cyclic number.

It is not a de Polignac number, because 27420013 - 2¹⁷ = 27288941 is a prime.

It is a super-2 number, since 2×27420013² = 1503714225840338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27420017) 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 as a sum of consecutive naturals, namely, 13710006 + 13710007.

It is an arithmetic number, because the mean of its divisors is an integer number (13710007).

Almost surely, 2^27420013 is an apocalyptic number.

It is an amenable number.

27420013 is a deficient number, since it is larger than the sum of its proper divisors (1).

27420013 is an equidigital number, since it uses as much as digits as its factorization.

27420013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 27420013 is about 5236.4122259425. The cubic root of 27420013 is about 301.5476063572.

Adding to 27420013 its reverse (31002472), we get a palindrome (58422485).

The spelling of 27420013 in words is "twenty-seven million, four hundred twenty thousand, thirteen".