2845123 has 4 divisors (see below), whose sum is σ = 2968848. Its totient is φ = 2721400.

The previous prime is 2845109. The next prime is 2845127. The reversal of 2845123 is 3215482.

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 2845123 - 2⁵ = 2845091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2845127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61828 + ... + 61873.

It is an arithmetic number, because the mean of its divisors is an integer number (742212).

2^2845123 is an apocalyptic number.

2845123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2845123 is a deficient number, since it is larger than the sum of its proper divisors (123725).

2845123 is a wasteful number, since it uses less digits than its factorization.

2845123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123724.

The product of its digits is 1920, while the sum is 25.

The square root of 2845123 is about 1686.7492404030. The cubic root of 2845123 is about 141.6990750922.

The spelling of 2845123 in words is "two million, eight hundred forty-five thousand, one hundred twenty-three".