212012042 has 16 divisors (see below), whose sum is σ = 347283072. Its totient is φ = 96270720.

The previous prime is 212012033. The next prime is 212012057. The reversal of 212012042 is 240210212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19898 + ... + 28634.

It is an arithmetic number, because the mean of its divisors is an integer number (21705192).

Almost surely, 2^212012042 is an apocalyptic number.

212012042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212012042 is a deficient number, since it is larger than the sum of its proper divisors (135271030).

212012042 is a wasteful number, since it uses less digits than its factorization.

212012042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9853.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 212012042 is about 14560.6332966667. The cubic root of 212012042 is about 596.2844853748.

Adding to 212012042 its reverse (240210212), we get a palindrome (452222254).

The spelling of 212012042 in words is "two hundred twelve million, twelve thousand, forty-two".