2605123 has 4 divisors (see below), whose sum is σ = 2615008. Its totient is φ = 2595240.

The previous prime is 2605103. The next prime is 2605139. The reversal of 2605123 is 3215062.

It is a happy number.

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 2605123 - 2⁵ = 2605091 is a prime.

It is a Duffinian number.

2605123 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2605123.

It is not an unprimeable number, because it can be changed into a prime (2605103) 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, 4536 + ... + 5077.

It is an arithmetic number, because the mean of its divisors is an integer number (653752).

2^2605123 is an apocalyptic number.

2605123 is a deficient number, since it is larger than the sum of its proper divisors (9885).

2605123 is an equidigital number, since it uses as much as digits as its factorization.

2605123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9884.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2605123 is about 1614.0393427671. The cubic root of 2605123 is about 137.5971412726.

The spelling of 2605123 in words is "two million, six hundred five thousand, one hundred twenty-three".