211057242 has 16 divisors (see below), whose sum is σ = 460488672. Its totient is φ = 63956720.

The previous prime is 211057241. The next prime is 211057267. The reversal of 211057242 is 242750112.

211057242 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (211057241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598853 + ... + 1598984.

It is an arithmetic number, because the mean of its divisors is an integer number (28780542).

Almost surely, 2^211057242 is an apocalyptic number.

211057242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211057242 is an abundant number, since it is smaller than the sum of its proper divisors (249431430).

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

211057242 is a wasteful number, since it uses less digits than its factorization.

211057242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197853.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 211057242 is about 14527.8092636158. The cubic root of 211057242 is about 595.3880123376.

The spelling of 211057242 in words is "two hundred eleven million, fifty-seven thousand, two hundred forty-two".