2105023 has 6 divisors (see below), whose sum is σ = 2180984. Its totient is φ = 2031624.

The previous prime is 2105009. The next prime is 2105027. The reversal of 2105023 is 3205012.

It is a de Polignac number, because none of the positive numbers 2^k-2105023 is a prime.

It is a super-2 number, since 2×2105023² = 8862243661058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2104994 and 2105012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411 + ... + 2092.

2^2105023 is an apocalyptic number.

2105023 is a deficient number, since it is larger than the sum of its proper divisors (75961).

2105023 is an equidigital number, since it uses as much as digits as its factorization.

2105023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561 (or 2532 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2105023 is about 1450.8697391565. The cubic root of 2105023 is about 128.1599359817.

The spelling of 2105023 in words is "two million, one hundred five thousand, twenty-three".