2128171 has 8 divisors (see below), whose sum is σ = 2264400. Its totient is φ = 1994400.

The previous prime is 2128157. The next prime is 2128177. The reversal of 2128171 is 1718212.

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 2128171 - 2⁹ = 2127659 is a prime.

It is a super-2 number, since 2×2128171² = 9058223610482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128177) 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, 1365 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (283050).

2^2128171 is an apocalyptic number.

2128171 is a deficient number, since it is larger than the sum of its proper divisors (136229).

2128171 is a wasteful number, since it uses less digits than its factorization.

2128171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229.

The product of its digits is 224, while the sum is 22.

The square root of 2128171 is about 1458.8252122856. The cubic root of 2128171 is about 128.6279970358.

The spelling of 2128171 in words is "two million, one hundred twenty-eight thousand, one hundred seventy-one".