27142471 has 4 divisors (see below), whose sum is σ = 27153112. Its totient is φ = 27131832.

The previous prime is 27142459. The next prime is 27142477. The reversal of 27142471 is 17424172.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 27142471 - 2⁵ = 27142439 is a prime.

It is a super-3 number, since 3×27142471³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27142477) 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 3 ways as a sum of consecutive naturals, for example, 1045 + ... + 7441.

It is an arithmetic number, because the mean of its divisors is an integer number (6788278).

Almost surely, 2^27142471 is an apocalyptic number.

27142471 is a deficient number, since it is larger than the sum of its proper divisors (10641).

27142471 is an equidigital number, since it uses as much as digits as its factorization.

27142471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640.

The product of its digits is 3136, while the sum is 28.

The square root of 27142471 is about 5209.8436636813. The cubic root of 27142471 is about 300.5267449616.

The spelling of 27142471 in words is "twenty-seven million, one hundred forty-two thousand, four hundred seventy-one".