211707142 has 8 divisors (see below), whose sum is σ = 318126456. Its totient is φ = 105664992.

The previous prime is 211707131. The next prime is 211707143. The reversal of 211707142 is 241707112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211707143) by changing a digit.

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, 92883 + ... + 95134.

It is an arithmetic number, because the mean of its divisors is an integer number (39765807).

Almost surely, 2^211707142 is an apocalyptic number.

211707142 is a deficient number, since it is larger than the sum of its proper divisors (106419314).

211707142 is a wasteful number, since it uses less digits than its factorization.

211707142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188582.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 211707142 is about 14550.1595180259. The cubic root of 211707142 is about 595.9985041928.

The spelling of 211707142 in words is "two hundred eleven million, seven hundred seven thousand, one hundred forty-two".