212140031242 has 8 divisors (see below), whose sum is σ = 324980473536. Its totient is φ = 103813206732.

The previous prime is 212140031183. The next prime is 212140031261. The reversal of 212140031242 is 242130041212.

212140031242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 1128404328 + ... + 1128404515.

It is an arithmetic number, because the mean of its divisors is an integer number (40622559192).

Almost surely, 2^212140031242 is an apocalyptic number.

212140031242 is a deficient number, since it is larger than the sum of its proper divisors (112840442294).

212140031242 is a wasteful number, since it uses less digits than its factorization.

212140031242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256808892.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 212140031242 its reverse (242130041212), we get a palindrome (454270072454).

The spelling of 212140031242 in words is "two hundred twelve billion, one hundred forty million, thirty-one thousand, two hundred forty-two".