27142191 has 6 divisors (see below), whose sum is σ = 39205400. Its totient is φ = 18094788.

The previous prime is 27142189. The next prime is 27142229. The reversal of 27142191 is 19124172.

It is not a de Polignac number, because 27142191 - 2¹ = 27142189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27142111) 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 in 5 ways as a sum of consecutive naturals, for example, 1507891 + ... + 1507908.

Almost surely, 2^27142191 is an apocalyptic number.

27142191 is a deficient number, since it is larger than the sum of its proper divisors (12063209).

27142191 is a wasteful number, since it uses less digits than its factorization.

27142191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3015805 (or 3015802 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 27142191 is about 5209.8167914045. The cubic root of 27142191 is about 300.5257115531.

The spelling of 27142191 in words is "twenty-seven million, one hundred forty-two thousand, one hundred ninety-one".