211342242 has 32 divisors (see below), whose sum is σ = 429315264. Its totient is φ = 69350400.

The previous prime is 211342237. The next prime is 211342267. The reversal of 211342242 is 242243112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121942 + ... + 123662.

It is an arithmetic number, because the mean of its divisors is an integer number (13416102).

Almost surely, 2^211342242 is an apocalyptic number.

211342242 is an abundant number, since it is smaller than the sum of its proper divisors (217973022).

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

211342242 is a wasteful number, since it uses less digits than its factorization.

211342242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034.

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

The square root of 211342242 is about 14537.6147286960. The cubic root of 211342242 is about 595.6558847896.

Adding to 211342242 its reverse (242243112), we get a palindrome (453585354).

The spelling of 211342242 in words is "two hundred eleven million, three hundred forty-two thousand, two hundred forty-two".