27142531 has 8 divisors (see below), whose sum is σ = 29286320. Its totient is φ = 25006752.

The previous prime is 27142529. The next prime is 27142559. The reversal of 27142531 is 13524172.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27142531 - 2¹ = 27142529 is a prime.

It is a super-2 number, since 2×27142531² = 1473433978171922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27142496 and 27142505.

It is not an unprimeable number, because it can be changed into a prime (27146531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6361 + ... + 9733.

It is an arithmetic number, because the mean of its divisors is an integer number (3660790).

Almost surely, 2^27142531 is an apocalyptic number.

27142531 is a deficient number, since it is larger than the sum of its proper divisors (2143789).

27142531 is a wasteful number, since it uses less digits than its factorization.

27142531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005.

The product of its digits is 1680, while the sum is 25.

The square root of 27142531 is about 5209.8494220083. The cubic root of 27142531 is about 300.5269664053.

The spelling of 27142531 in words is "twenty-seven million, one hundred forty-two thousand, five hundred thirty-one".