2128541 has 4 divisors (see below), whose sum is σ = 2131584. Its totient is φ = 2125500.

The previous prime is 2128531. The next prime is 2128547. The reversal of 2128541 is 1458212.

2128541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2128541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116 + ... + 2066.

It is an arithmetic number, because the mean of its divisors is an integer number (532896).

2^2128541 is an apocalyptic number.

It is an amenable number.

2128541 is a deficient number, since it is larger than the sum of its proper divisors (3043).

2128541 is a wasteful number, since it uses less digits than its factorization.

2128541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042.

The product of its digits is 640, while the sum is 23.

The square root of 2128541 is about 1458.9520211439. The cubic root of 2128541 is about 128.6354509483.

The spelling of 2128541 in words is "two million, one hundred twenty-eight thousand, five hundred forty-one".