212130042 has 16 divisors (see below), whose sum is σ = 425523072. Its totient is φ = 70499520.

The previous prime is 212130031. The next prime is 212130047. The reversal of 212130042 is 240031212.

212130042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212130047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50434 + ... + 54477.

It is an arithmetic number, because the mean of its divisors is an integer number (26595192).

Almost surely, 2^212130042 is an apocalyptic number.

212130042 is an abundant number, since it is smaller than the sum of its proper divisors (213393030).

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

212130042 is a wasteful number, since it uses less digits than its factorization.

212130042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105253.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 212130042 is about 14564.6847545699. The cubic root of 212130042 is about 596.3950899720.

Adding to 212130042 its reverse (240031212), we get a palindrome (452161254).

The spelling of 212130042 in words is "two hundred twelve million, one hundred thirty thousand, forty-two".