211042434 has 24 divisors (see below), whose sum is σ = 441240912. Its totient is φ = 67287880.

The previous prime is 211042427. The next prime is 211042453. The reversal of 211042434 is 434240112.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211042434.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30072 + ... + 36419.

It is an arithmetic number, because the mean of its divisors is an integer number (18385038).

Almost surely, 2^211042434 is an apocalyptic number.

211042434 is an abundant number, since it is smaller than the sum of its proper divisors (230198478).

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

211042434 is a wasteful number, since it uses less digits than its factorization.

211042434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66542 (or 66519 counting only the distinct ones).

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

The square root of 211042434 is about 14527.2996114212. The cubic root of 211042434 is about 595.3740876604.

Adding to 211042434 its reverse (434240112), we get a palindrome (645282546).

It can be divided in two parts, 2110 and 42434, that added together give a palindrome (44544).

The spelling of 211042434 in words is "two hundred eleven million, forty-two thousand, four hundred thirty-four".