2871121 has 4 divisors (see below), whose sum is σ = 3132144. Its totient is φ = 2610100.

The previous prime is 2871119. The next prime is 2871133. The reversal of 2871121 is 1211782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2871121 - 2¹ = 2871119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2871092 and 2871101.

It is not an unprimeable number, because it can be changed into a prime (2871101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130495 + ... + 130516.

It is an arithmetic number, because the mean of its divisors is an integer number (783036).

2^2871121 is an apocalyptic number.

It is an amenable number.

2871121 is a deficient number, since it is larger than the sum of its proper divisors (261023).

2871121 is a wasteful number, since it uses less digits than its factorization.

2871121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261022.

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

The square root of 2871121 is about 1694.4382549978. The cubic root of 2871121 is about 142.1293702971.

It can be divided in two parts, 2871 and 121, that added together give a palindrome (2992).

The spelling of 2871121 in words is "two million, eight hundred seventy-one thousand, one hundred twenty-one".