2143124140 has 24 divisors (see below), whose sum is σ = 4509424080. Its totient is φ = 855561408.

The previous prime is 2143124131. The next prime is 2143124141. The reversal of 2143124140 is 414213412.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2143124141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95082 + ... + 115441.

It is an arithmetic number, because the mean of its divisors is an integer number (187892670).

Almost surely, 2^2143124140 is an apocalyptic number.

2143124140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143124140 is an abundant number, since it is smaller than the sum of its proper divisors (2366299940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143124140 is a wasteful number, since it uses less digits than its factorization.

2143124140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211041 (or 211039 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2143124140 is about 46293.8887975508. Note that the first 3 decimals coincide. The cubic root of 2143124140 is about 1289.2855326945.

Adding to 2143124140 its reverse (414213412), we get a palindrome (2557337552).

The spelling of 2143124140 in words is "two billion, one hundred forty-three million, one hundred twenty-four thousand, one hundred forty".