2143125 has 40 divisors (see below), whose sum is σ = 3998720. Its totient is φ = 1134000.

The previous prime is 2143109. The next prime is 2143147. The reversal of 2143125 is 5213412.

It is not a de Polignac number, because 2143125 - 2⁴ = 2143109 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2143098 and 2143107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16812 + ... + 16938.

It is an arithmetic number, because the mean of its divisors is an integer number (99968).

2^2143125 is an apocalyptic number.

2143125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143125 is a deficient number, since it is larger than the sum of its proper divisors (1855595).

2143125 is an equidigital number, since it uses as much as digits as its factorization.

2143125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 135 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 2143125 is about 1463.9415971957. The cubic root of 2143125 is about 128.9285705151.

Adding to 2143125 its reverse (5213412), we get a palindrome (7356537).

The spelling of 2143125 in words is "two million, one hundred forty-three thousand, one hundred twenty-five".