27142157 has 4 divisors (see below), whose sum is σ = 31019616. Its totient is φ = 23264700.

The previous prime is 27142153. The next prime is 27142187. The reversal of 27142157 is 75124172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27142157 - 2² = 27142153 is a prime.

It is a super-2 number, since 2×27142157² = 1473393373225298, which contains 22 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 (27142151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938719 + ... + 1938732.

It is an arithmetic number, because the mean of its divisors is an integer number (7754904).

Almost surely, 2^27142157 is an apocalyptic number.

It is an amenable number.

27142157 is a deficient number, since it is larger than the sum of its proper divisors (3877459).

27142157 is an equidigital number, since it uses as much as digits as its factorization.

27142157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877458.

The product of its digits is 3920, while the sum is 29.

The square root of 27142157 is about 5209.8135283329. The cubic root of 27142157 is about 300.5255860673.

The spelling of 27142157 in words is "twenty-seven million, one hundred forty-two thousand, one hundred fifty-seven".