2143240140 has 48 divisors (see below), whose sum is σ = 6008502528. Its totient is φ = 570823104.

The previous prime is 2143240117. The next prime is 2143240241. The reversal of 2143240140 is 410423412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27679 + ... + 71081.

It is an arithmetic number, because the mean of its divisors is an integer number (125177136).

Almost surely, 2^2143240140 is an apocalyptic number.

2143240140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143240140 is an abundant number, since it is smaller than the sum of its proper divisors (3865262388).

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

2143240140 is a wasteful number, since it uses less digits than its factorization.

2143240140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44238 (or 44236 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2143240140 is about 46295.1416457494. The cubic root of 2143240140 is about 1289.3087938177.

Adding to 2143240140 its reverse (410423412), we get a palindrome (2553663552).

The spelling of 2143240140 in words is "two billion, one hundred forty-three million, two hundred forty thousand, one hundred forty".