2172141 has 12 divisors (see below), whose sum is σ = 3322332. Its totient is φ = 1362816.

The previous prime is 2172113. The next prime is 2172151. The reversal of 2172141 is 1412712.

It can be written as a sum of positive squares in 2 ways, for example, as 1988100 + 184041 = 1410^2 + 429^2 .

It is not a de Polignac number, because 2172141 - 2⁵ = 2172109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6946 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (276861).

2^2172141 is an apocalyptic number.

It is an amenable number.

2172141 is a deficient number, since it is larger than the sum of its proper divisors (1150191).

2172141 is a wasteful number, since it uses less digits than its factorization.

2172141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14220 (or 14217 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 2172141 is about 1473.8185098580. The cubic root of 2172141 is about 129.5078234020.

Adding to 2172141 its reverse (1412712), we get a palindrome (3584853).

The spelling of 2172141 in words is "two million, one hundred seventy-two thousand, one hundred forty-one".