2105345 has 16 divisors (see below), whose sum is σ = 2790720. Its totient is φ = 1512000.

The previous prime is 2105329. The next prime is 2105347. The reversal of 2105345 is 5435012.

It is not a de Polignac number, because 2105345 - 2⁴ = 2105329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2105347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5366 + ... + 5744.

It is an arithmetic number, because the mean of its divisors is an integer number (174420).

It is a Proth number, since it is equal to 257 ⋅ 2¹³ + 1 and 257 < 2¹³.

2^2105345 is an apocalyptic number.

It is an amenable number.

2105345 is a deficient number, since it is larger than the sum of its proper divisors (685375).

2105345 is a wasteful number, since it uses less digits than its factorization.

2105345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2105345 is about 1450.9807028352. The cubic root of 2105345 is about 128.1664704147.

It can be divided in two parts, 210 and 5345, that added together give a palindrome (5555).

The spelling of 2105345 in words is "two million, one hundred five thousand, three hundred forty-five".