212440324142 has 16 divisors (see below), whose sum is σ = 329137815552. Its totient is φ = 102731843160.

The previous prime is 212440324139. The next prime is 212440324147. The reversal of 212440324142 is 241423044212.

It is a happy number.

212440324142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212440324147) 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, 927098 + ... + 1133309.

It is an arithmetic number, because the mean of its divisors is an integer number (20571113472).

Almost surely, 2^212440324142 is an apocalyptic number.

212440324142 is a deficient number, since it is larger than the sum of its proper divisors (116697491410).

212440324142 is a wasteful number, since it uses less digits than its factorization.

212440324142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062103.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 212440324142 its reverse (241423044212), we get a palindrome (453863368354).

The spelling of 212440324142 in words is "two hundred twelve billion, four hundred forty million, three hundred twenty-four thousand, one hundred forty-two".