2125123 has 24 divisors (see below), whose sum is σ = 2889824. Its totient is φ = 1520640.

The previous prime is 2125111. The next prime is 2125147. The reversal of 2125123 is 3215212.

It is not a de Polignac number, because 2125123 - 2¹⁷ = 1994051 is a prime.

It is a super-2 number, since 2×2125123² = 9032295530258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2125097 and 2125106.

It is not an unprimeable number, because it can be changed into a prime (2125163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10915 + ... + 11107.

2^2125123 is an apocalyptic number.

2125123 is a deficient number, since it is larger than the sum of its proper divisors (764701).

2125123 is a wasteful number, since it uses less digits than its factorization.

2125123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 224 counting only the distinct ones).

The product of its digits is 120, while the sum is 16.

The square root of 2125123 is about 1457.7801617528. The cubic root of 2125123 is about 128.5665600155.

It can be divided in two parts, 212 and 5123, that added together give a palindrome (5335).

The spelling of 2125123 in words is "two million, one hundred twenty-five thousand, one hundred twenty-three".