128571 has 8 divisors (see below), whose sum is σ = 181584. Its totient is φ = 80640.

The previous prime is 128563. The next prime is 128591. The reversal of 128571 is 175821.

128571 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 128571 - 2³ = 128563 is a prime.

128571 is strictly pandigital in base 7.

128571 is a lucky number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (128521) 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, 1210 + ... + 1311.

It is an arithmetic number, because the mean of its divisors is an integer number (22698).

2¹²⁸⁵⁷¹ is an apocalyptic number.

128571 is a deficient number, since it is larger than the sum of its proper divisors (53013).

128571 is a wasteful number, since it uses less digits than its factorization.

128571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541.

The product of its digits is 560, while the sum is 24.

The square root of 128571 is about 358.5679851855. The cubic root of 128571 is about 50.4716698924.

The spelling of 128571 in words is "one hundred twenty-eight thousand, five hundred seventy-one".