2140212043 has 4 divisors (see below), whose sum is σ = 2145800448. Its totient is φ = 2134623640.

The previous prime is 2140212037. The next prime is 2140212083. The reversal of 2140212043 is 3402120412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2140212043 - 2¹³ = 2140203851 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 2140212043.

It is not an unprimeable number, because it can be changed into a prime (2140212083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2793628 + ... + 2794393.

It is an arithmetic number, because the mean of its divisors is an integer number (536450112).

Almost surely, 2^2140212043 is an apocalyptic number.

2140212043 is a deficient number, since it is larger than the sum of its proper divisors (5588405).

2140212043 is an equidigital number, since it uses as much as digits as its factorization.

2140212043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5588404.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2140212043 is about 46262.4258226911. The cubic root of 2140212043 is about 1288.7013036077.

Adding to 2140212043 its reverse (3402120412), we get a palindrome (5542332455).

The spelling of 2140212043 in words is "two billion, one hundred forty million, two hundred twelve thousand, forty-three".