2128105 has 16 divisors (see below), whose sum is σ = 2991744. Its totient is φ = 1422720.

The previous prime is 2128103. The next prime is 2128153. The reversal of 2128105 is 5018212.

It is not a de Polignac number, because 2128105 - 2¹ = 2128103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694 + ... + 2176.

It is an arithmetic number, because the mean of its divisors is an integer number (186984).

2^2128105 is an apocalyptic number.

It is an amenable number.

2128105 is a deficient number, since it is larger than the sum of its proper divisors (863639).

2128105 is a wasteful number, since it uses less digits than its factorization.

2128105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2128105 is about 1458.8025911685. The cubic root of 2128105 is about 128.6266673282.

The spelling of 2128105 in words is "two million, one hundred twenty-eight thousand, one hundred five".