27042469 has 2 divisors, whose sum is σ = 27042470. Its totient is φ = 27042468.

The previous prime is 27042467. The next prime is 27042487. The reversal of 27042469 is 96424072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24108100 + 2934369 = 4910^2 + 1713^2 .

It is a cyclic number.

It is not a de Polignac number, because 27042469 - 2¹ = 27042467 is a prime.

It is a super-2 number, since 2×27042469² = 1462590259231922, which contains 22 as substring.

Together with 27042467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27042467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13521234 + 13521235.

It is an arithmetic number, because the mean of its divisors is an integer number (13521235).

Almost surely, 2^27042469 is an apocalyptic number.

It is an amenable number.

27042469 is a deficient number, since it is larger than the sum of its proper divisors (1).

27042469 is an equidigital number, since it uses as much as digits as its factorization.

27042469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 27042469 is about 5200.2373984271. The cubic root of 27042469 is about 300.1572101947.

The spelling of 27042469 in words is "twenty-seven million, forty-two thousand, four hundred sixty-nine".