2140344543 has 8 divisors (see below), whose sum is σ = 2867318656. Its totient is φ = 1420133400.

The previous prime is 2140344533. The next prime is 2140344553. The reversal of 2140344543 is 3454430412.

It is an interprime number because it is at equal distance from previous prime (2140344533) and next prime (2140344553).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2140344543 - 2²² = 2136150239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2140344543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140344533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690003 + ... + 1691268.

It is an arithmetic number, because the mean of its divisors is an integer number (358414832).

Almost surely, 2^2140344543 is an apocalyptic number.

2140344543 is a deficient number, since it is larger than the sum of its proper divisors (726974113).

2140344543 is a wasteful number, since it uses less digits than its factorization.

2140344543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381485.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 2140344543 is about 46263.8578482167. The cubic root of 2140344543 is about 1288.7278974522.

Adding to 2140344543 its reverse (3454430412), we get a palindrome (5594774955).

The spelling of 2140344543 in words is "two billion, one hundred forty million, three hundred forty-four thousand, five hundred forty-three".