2143240125 has 32 divisors (see below), whose sum is σ = 3840695040. Its totient is φ = 1055131200.

The previous prime is 2143240117. The next prime is 2143240241. The reversal of 2143240125 is 5210423412.

It is not a de Polignac number, because 2143240125 - 2³ = 2143240117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2143240095 and 2143240104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214945 + ... + 224694.

It is an arithmetic number, because the mean of its divisors is an integer number (120021720).

Almost surely, 2^2143240125 is an apocalyptic number.

2143240125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143240125 is a deficient number, since it is larger than the sum of its proper divisors (1697454915).

2143240125 is a wasteful number, since it uses less digits than its factorization.

2143240125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439670 (or 439660 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2143240125 is about 46295.1414837454. The cubic root of 2143240125 is about 1289.3087908098.

Adding to 2143240125 its reverse (5210423412), we get a palindrome (7353663537).

The spelling of 2143240125 in words is "two billion, one hundred forty-three million, two hundred forty thousand, one hundred twenty-five".