211727042 has 6 divisors (see below), whose sum is σ = 317621433. Its totient is φ = 105853232.

The previous prime is 211727039. The next prime is 211727053. The reversal of 211727042 is 240727112.

211727042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 171898321 + 39828721 = 13111^2 + 6311^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10289.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15434 + ... + 25722.

Almost surely, 2^211727042 is an apocalyptic number.

211727042 is a deficient number, since it is larger than the sum of its proper divisors (105894391).

211727042 is an frugal number, since it uses more digits than its factorization.

211727042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20580 (or 10291 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 211727042 is about 14550.8433432568. The cubic root of 211727042 is about 596.0171777852.

Multiplying 211727042 by its product of nonzero digits (1568), we get a square (331988001856 = 576184²).

The spelling of 211727042 in words is "two hundred eleven million, seven hundred twenty-seven thousand, forty-two".