27142479 has 32 divisors (see below), whose sum is σ = 49495040. Its totient is φ = 14315616.

The previous prime is 27142477. The next prime is 27142481. The reversal of 27142479 is 97424172.

It is an interprime number because it is at equal distance from previous prime (27142477) and next prime (27142481).

It is not a de Polignac number, because 27142479 - 2¹ = 27142477 is a prime.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3067 + ... + 7980.

It is an arithmetic number, because the mean of its divisors is an integer number (1546720).

Almost surely, 2^27142479 is an apocalyptic number.

27142479 is a deficient number, since it is larger than the sum of its proper divisors (22352561).

27142479 is a wasteful number, since it uses less digits than its factorization.

27142479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11076 (or 11070 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 27142479 is about 5209.8444314586. The cubic root of 27142479 is about 300.5267744874.

The spelling of 27142479 in words is "twenty-seven million, one hundred forty-two thousand, four hundred seventy-nine".