27142477 has 2 divisors, whose sum is σ = 27142478. Its totient is φ = 27142476.

The previous prime is 27142459. The next prime is 27142481. The reversal of 27142477 is 77424172.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21353641 + 5788836 = 4621^2 + 2406^2 .

It is a cyclic number.

It is not a de Polignac number, because 27142477 - 2¹¹ = 27140429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27145477) 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, 13571238 + 13571239.

It is an arithmetic number, because the mean of its divisors is an integer number (13571239).

Almost surely, 2^27142477 is an apocalyptic number.

It is an amenable number.

27142477 is a deficient number, since it is larger than the sum of its proper divisors (1).

27142477 is an equidigital number, since it uses as much as digits as its factorization.

27142477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21952, while the sum is 34.

The square root of 27142477 is about 5209.8442395143. The cubic root of 27142477 is about 300.5267671059.

The spelling of 27142477 in words is "twenty-seven million, one hundred forty-two thousand, four hundred seventy-seven".