27142243 has 2 divisors, whose sum is σ = 27142244. Its totient is φ = 27142242.

The previous prime is 27142237. The next prime is 27142253. The reversal of 27142243 is 34224172.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27142243 is a prime.

It is not a weakly prime, because it can be changed into another prime (27142253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13571121 + 13571122.

It is an arithmetic number, because the mean of its divisors is an integer number (13571122).

Almost surely, 2^27142243 is an apocalyptic number.

27142243 is a deficient number, since it is larger than the sum of its proper divisors (1).

27142243 is an equidigital number, since it uses as much as digits as its factorization.

27142243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 25.

The square root of 27142243 is about 5209.8217819806. The cubic root of 27142243 is about 300.5259034723.

The spelling of 27142243 in words is "twenty-seven million, one hundred forty-two thousand, two hundred forty-three".