2265123 has 24 divisors (see below), whose sum is σ = 3702720. Its totient is φ = 1224720.

The previous prime is 2265101. The next prime is 2265143. The reversal of 2265123 is 3215622.

It is not a de Polignac number, because 2265123 - 2⁹ = 2264611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2265123.

It is not an unprimeable number, because it can be changed into a prime (2265143) 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 23 ways as a sum of consecutive naturals, for example, 2388 + ... + 3198.

It is an arithmetic number, because the mean of its divisors is an integer number (154280).

2^2265123 is an apocalyptic number.

2265123 is a deficient number, since it is larger than the sum of its proper divisors (1437597).

2265123 is a wasteful number, since it uses less digits than its factorization.

2265123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 840 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 2265123 is about 1505.0325577874. The cubic root of 2265123 is about 131.3299956779.

The spelling of 2265123 in words is "two million, two hundred sixty-five thousand, one hundred twenty-three".