2123125 has 20 divisors (see below), whose sum is σ = 2749120. Its totient is φ = 1638000.

The previous prime is 2123123. The next prime is 2123129. The reversal of 2123125 is 5213212.

It is not a de Polignac number, because 2123125 - 2¹ = 2123123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123099 and 2123108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26836 + ... + 26914.

It is an arithmetic number, because the mean of its divisors is an integer number (137456).

2^2123125 is an apocalyptic number.

2123125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2123125 is a deficient number, since it is larger than the sum of its proper divisors (625995).

2123125 is an frugal number, since it uses more digits than its factorization.

2123125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 127 counting only the distinct ones).

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

The square root of 2123125 is about 1457.0947120898. The cubic root of 2123125 is about 128.5262554414.

Adding to 2123125 its reverse (5213212), we get a palindrome (7336337).

The spelling of 2123125 in words is "two million, one hundred twenty-three thousand, one hundred twenty-five".