211718142 has 24 divisors (see below), whose sum is σ = 460517616. Its totient is φ = 70296576.

The previous prime is 211718141. The next prime is 211718147. The reversal of 211718142 is 241817112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211718141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18258 + ... + 27509.

It is an arithmetic number, because the mean of its divisors is an integer number (19188234).

Almost surely, 2^211718142 is an apocalyptic number.

211718142 is an abundant number, since it is smaller than the sum of its proper divisors (248799474).

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

211718142 is a wasteful number, since it uses less digits than its factorization.

211718142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46032 (or 46029 counting only the distinct ones).

The product of its digits is 896, while the sum is 27.

The square root of 211718142 is about 14550.5375158446. The cubic root of 211718142 is about 596.0088264236.

The spelling of 211718142 in words is "two hundred eleven million, seven hundred eighteen thousand, one hundred forty-two".