2140212443 has 4 divisors (see below), whose sum is σ = 2141347320. Its totient is φ = 2139077568.

The previous prime is 2140212401. The next prime is 2140212461. The reversal of 2140212443 is 3442120412.

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 2140212443 - 2²² = 2136018139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140215443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564605 + ... + 568382.

It is an arithmetic number, because the mean of its divisors is an integer number (535336830).

Almost surely, 2^2140212443 is an apocalyptic number.

2140212443 is a deficient number, since it is larger than the sum of its proper divisors (1134877).

2140212443 is a wasteful number, since it uses less digits than its factorization.

2140212443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134876.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2140212443 is about 46262.4301458538. The cubic root of 2140212443 is about 1288.7013838927.

Adding to 2140212443 its reverse (3442120412), we get a palindrome (5582332855).

The spelling of 2140212443 in words is "two billion, one hundred forty million, two hundred twelve thousand, four hundred forty-three".