2106045 has 24 divisors (see below), whose sum is σ = 3866616. Its totient is φ = 1056768.

The previous prime is 2106029. The next prime is 2106059. The reversal of 2106045 is 5406012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 933156 + 1172889 = 966^2 + 1083^2 .

It is not a de Polignac number, because 2106045 - 2⁴ = 2106029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 612 + ... + 2141.

It is an arithmetic number, because the mean of its divisors is an integer number (161109).

2^2106045 is an apocalyptic number.

It is an amenable number.

2106045 is a deficient number, since it is larger than the sum of its proper divisors (1760571).

2106045 is a wasteful number, since it uses less digits than its factorization.

2106045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781 (or 2778 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2106045 is about 1451.2218989527. The cubic root of 2106045 is about 128.1806734057.

The spelling of 2106045 in words is "two million, one hundred six thousand, forty-five".