2105423 has 4 divisors (see below), whose sum is σ = 2125968. Its totient is φ = 2084880.

The previous prime is 2105419. The next prime is 2105431. The reversal of 2105423 is 3245012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2105423 - 2² = 2105419 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 0 + 5 + 4³ + 2²¹ + 3² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10118 + ... + 10323.

It is an arithmetic number, because the mean of its divisors is an integer number (531492).

2^2105423 is an apocalyptic number.

2105423 is a deficient number, since it is larger than the sum of its proper divisors (20545).

2105423 is a wasteful number, since it uses less digits than its factorization.

2105423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20544.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2105423 is about 1451.0075809588. The cubic root of 2105423 is about 128.1680531896.

The spelling of 2105423 in words is "two million, one hundred five thousand, four hundred twenty-three".