211606042 has 4 divisors (see below), whose sum is σ = 317409066. Its totient is φ = 105803020.

The previous prime is 211606039. The next prime is 211606063. The reversal of 211606042 is 240606112.

211606042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 106523041 + 105083001 = 10321^2 + 10251^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52901509 + ... + 52901512.

Almost surely, 2^211606042 is an apocalyptic number.

211606042 is a deficient number, since it is larger than the sum of its proper divisors (105803024).

211606042 is a wasteful number, since it uses less digits than its factorization.

211606042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105803023.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 211606042 is about 14546.6849144401. The cubic root of 211606042 is about 595.9036167579.

The spelling of 211606042 in words is "two hundred eleven million, six hundred six thousand, forty-two".