27242147 has 2 divisors, whose sum is σ = 27242148. Its totient is φ = 27242146.

The previous prime is 27242077. The next prime is 27242179. The reversal of 27242147 is 74124272.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27242147 is a prime.

It is not a weakly prime, because it can be changed into another prime (27242197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13621073 + 13621074.

It is an arithmetic number, because the mean of its divisors is an integer number (13621074).

Almost surely, 2^27242147 is an apocalyptic number.

27242147 is a deficient number, since it is larger than the sum of its proper divisors (1).

27242147 is an equidigital number, since it uses as much as digits as its factorization.

27242147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 29.

The square root of 27242147 is about 5219.4010192741. The cubic root of 27242147 is about 300.8941729420.

The spelling of 27242147 in words is "twenty-seven million, two hundred forty-two thousand, one hundred forty-seven".