2122845 has 16 divisors (see below), whose sum is σ = 3433920. Its totient is φ = 1119744.

The previous prime is 2122843. The next prime is 2122853. The reversal of 2122845 is 5482212.

It is not a de Polignac number, because 2122845 - 2¹ = 2122843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122843) 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, 726 + ... + 2184.

It is an arithmetic number, because the mean of its divisors is an integer number (214620).

2^2122845 is an apocalyptic number.

It is an amenable number.

2122845 is a deficient number, since it is larger than the sum of its proper divisors (1311075).

2122845 is a wasteful number, since it uses less digits than its factorization.

2122845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564.

The product of its digits is 1280, while the sum is 24.

The square root of 2122845 is about 1456.9986273158. The cubic root of 2122845 is about 128.5206051329.

The spelling of 2122845 in words is "two million, one hundred twenty-two thousand, eight hundred forty-five".