191042713 has 4 divisors (see below), whose sum is σ = 191107840. Its totient is φ = 190977588.

The previous prime is 191042711. The next prime is 191042717. The reversal of 191042713 is 317240191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 191042713 - 2¹ = 191042711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191042711) 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, 27945 + ... + 34102.

It is an arithmetic number, because the mean of its divisors is an integer number (47776960).

Almost surely, 2^191042713 is an apocalyptic number.

It is an amenable number.

191042713 is a deficient number, since it is larger than the sum of its proper divisors (65127).

191042713 is an equidigital number, since it uses as much as digits as its factorization.

191042713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65126.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 191042713 is about 13821.8201768074. The cubic root of 191042713 is about 575.9394477643.

The spelling of 191042713 in words is "one hundred ninety-one million, forty-two thousand, seven hundred thirteen".