942047191 has 2 divisors, whose sum is σ = 942047192. Its totient is φ = 942047190.

The previous prime is 942047149. The next prime is 942047207. The reversal of 942047191 is 191740249.

It is a strong prime.

It is an emirp because it is prime and its reverse (191740249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 942047191 - 2²⁵ = 908492759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 942047191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (942047101) 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 as a sum of consecutive naturals, namely, 471023595 + 471023596.

It is an arithmetic number, because the mean of its divisors is an integer number (471023596).

Almost surely, 2^942047191 is an apocalyptic number.

942047191 is a deficient number, since it is larger than the sum of its proper divisors (1).

942047191 is an equidigital number, since it uses as much as digits as its factorization.

942047191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 942047191 is about 30692.7872797503. The cubic root of 942047191 is about 980.2967277921.

The spelling of 942047191 in words is "nine hundred forty-two million, forty-seven thousand, one hundred ninety-one".