27142237 has 2 divisors, whose sum is σ = 27142238. Its totient is φ = 27142236.

The previous prime is 27142229. The next prime is 27142243. The reversal of 27142237 is 73224172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16475481 + 10666756 = 4059^2 + 3266^2 .

It is a cyclic number.

It is not a de Polignac number, because 27142237 - 2³ = 27142229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27142337) 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, 13571118 + 13571119.

It is an arithmetic number, because the mean of its divisors is an integer number (13571119).

Almost surely, 2^27142237 is an apocalyptic number.

It is an amenable number.

27142237 is a deficient number, since it is larger than the sum of its proper divisors (1).

27142237 is an equidigital number, since it uses as much as digits as its factorization.

27142237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 28.

The square root of 27142237 is about 5209.8212061452. The cubic root of 27142237 is about 300.5258813278.

The spelling of 27142237 in words is "twenty-seven million, one hundred forty-two thousand, two hundred thirty-seven".