2128061 has 4 divisors (see below), whose sum is σ = 2291772. Its totient is φ = 1964352.

The previous prime is 2128051. The next prime is 2128067. The reversal of 2128061 is 1608212.

2128061 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.

It can be written as a sum of positive squares in 2 ways, for example, as 931225 + 1196836 = 965^2 + 1094^2 .

It is not a de Polignac number, because 2128061 - 2⁶ = 2127997 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 (2128067) 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, 81836 + ... + 81861.

It is an arithmetic number, because the mean of its divisors is an integer number (572943).

2^2128061 is an apocalyptic number.

It is an amenable number.

2128061 is a deficient number, since it is larger than the sum of its proper divisors (163711).

2128061 is a wasteful number, since it uses less digits than its factorization.

2128061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163710.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2128061 is about 1458.7875102290. The cubic root of 2128061 is about 128.6257808412.

It can be divided in two parts, 21 and 28061, that added together give a palindrome (28082).

The spelling of 2128061 in words is "two million, one hundred twenty-eight thousand, sixty-one".