212104434 has 16 divisors (see below), whose sum is σ = 438837120. Its totient is φ = 68263440.

The previous prime is 212104397. The next prime is 212104447. The reversal of 212104434 is 434401212.

212104434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212104434.

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, 609322 + ... + 609669.

It is an arithmetic number, because the mean of its divisors is an integer number (27427320).

Almost surely, 2^212104434 is an apocalyptic number.

212104434 is an abundant number, since it is smaller than the sum of its proper divisors (226732686).

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

212104434 is a wasteful number, since it uses less digits than its factorization.

212104434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219025.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 212104434 is about 14563.8056152916. The cubic root of 212104434 is about 596.3710903853.

Adding to 212104434 its reverse (434401212), we get a palindrome (646505646).

The spelling of 212104434 in words is "two hundred twelve million, one hundred four thousand, four hundred thirty-four".