71427 has 8 divisors (see below), whose sum is σ = 98640. Its totient is φ = 45920.

The previous prime is 71419. The next prime is 71429. The reversal of 71427 is 72417.

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 71427 - 2³ = 71419 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 71427.

It is not an unprimeable number, because it can be changed into a prime (71429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324 + ... + 497.

It is an arithmetic number, because the mean of its divisors is an integer number (12330).

2⁷¹⁴²⁷ is an apocalyptic number.

71427 is a deficient number, since it is larger than the sum of its proper divisors (27213).

71427 is a wasteful number, since it uses less digits than its factorization.

71427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853.

The product of its digits is 392, while the sum is 21.

The square root of 71427 is about 267.2583020226. The cubic root of 71427 is about 41.4910223964.

Subtracting 71427 from its reverse (72417), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 7142 and 7, that multiplied together give a palindrome (49994).

The spelling of 71427 in words is "seventy-one thousand, four hundred twenty-seven", and thus it is an iban number.