212042140423 has 4 divisors (see below), whose sum is σ = 212048788248. Its totient is φ = 212035492600.

The previous prime is 212042140393. The next prime is 212042140439. The reversal of 212042140423 is 324041240212.

212042140423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212042140423 - 2²⁹ = 211505269511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212042140823) 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 3 ways as a sum of consecutive naturals, for example, 3275836 + ... + 3339937.

It is an arithmetic number, because the mean of its divisors is an integer number (53012197062).

Almost surely, 2^212042140423 is an apocalyptic number.

212042140423 is a deficient number, since it is larger than the sum of its proper divisors (6647825).

212042140423 is an equidigital number, since it uses as much as digits as its factorization.

212042140423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6647824.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 212042140423 its reverse (324041240212), we get a palindrome (536083380635).

The spelling of 212042140423 in words is "two hundred twelve billion, forty-two million, one hundred forty thousand, four hundred twenty-three".