211143242 has 8 divisors (see below), whose sum is σ = 318373632. Its totient is φ = 105018700.

The previous prime is 211143217. The next prime is 211143253. The reversal of 211143242 is 242341112.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 275984 + ... + 276747.

It is an arithmetic number, because the mean of its divisors is an integer number (39796704).

Almost surely, 2^211143242 is an apocalyptic number.

211143242 is a deficient number, since it is larger than the sum of its proper divisors (107230390).

211143242 is a wasteful number, since it uses less digits than its factorization.

211143242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552924.

The product of its digits is 384, while the sum is 20.

The square root of 211143242 is about 14530.7688027854. The cubic root of 211143242 is about 595.4688694161.

Adding to 211143242 its reverse (242341112), we get a palindrome (453484354).

The spelling of 211143242 in words is "two hundred eleven million, one hundred forty-three thousand, two hundred forty-two".