2128125 has 24 divisors (see below), whose sum is σ = 3562272. Its totient is φ = 1130000.

The previous prime is 2128103. The next prime is 2128153. The reversal of 2128125 is 5218212.

It is a happy number.

It is not a de Polignac number, because 2128125 - 2⁷ = 2127997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9262 + ... + 9488.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

2^2128125 is an apocalyptic number.

2128125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2128125 is a deficient number, since it is larger than the sum of its proper divisors (1434147).

2128125 is an frugal number, since it uses more digits than its factorization.

2128125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 235 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 2128125 is about 1458.8094460895. The cubic root of 2128125 is about 128.6270702728.

The spelling of 2128125 in words is "two million, one hundred twenty-eight thousand, one hundred twenty-five".