212140304120442 has 32 divisors (see below), whose sum is σ = 424535646873600. Its totient is φ = 70670937756848.

The previous prime is 212140304120411. The next prime is 212140304120449. The reversal of 212140304120442 is 244021403041212.

It is not an unprimeable number, because it can be changed into a prime (212140304120449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88585909 + ... + 90949127.

It is an arithmetic number, because the mean of its divisors is an integer number (13266738964800).

Almost surely, 2^{212140304120442} is an apocalyptic number.

212140304120442 is an abundant number, since it is smaller than the sum of its proper divisors (212395342753158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212140304120442 is a wasteful number, since it uses less digits than its factorization.

212140304120442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372210.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 212140304120442 its reverse (244021403041212), we get a palindrome (456161707161654).

The spelling of 212140304120442 in words is "two hundred twelve trillion, one hundred forty billion, three hundred four million, one hundred twenty thousand, four hundred forty-two".