2105245 has 4 divisors (see below), whose sum is σ = 2526300. Its totient is φ = 1684192.

The previous prime is 2105231. The next prime is 2105251. The reversal of 2105245 is 5425012.

2105245 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 1375929 + 729316 = 1173^2 + 854^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105245 - 2²¹ = 8093 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 210520 + ... + 210529.

It is an arithmetic number, because the mean of its divisors is an integer number (631575).

2^2105245 is an apocalyptic number.

It is an amenable number.

2105245 is a deficient number, since it is larger than the sum of its proper divisors (421055).

2105245 is an equidigital number, since it uses as much as digits as its factorization.

2105245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421054.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2105245 is about 1450.9462429739. The cubic root of 2105245 is about 128.1644411591.

The spelling of 2105245 in words is "two million, one hundred five thousand, two hundred forty-five".