91742443 has 8 divisors (see below), whose sum is σ = 99167936. Its totient is φ = 84369600.

The previous prime is 91742401. The next prime is 91742447. The reversal of 91742443 is 34424719.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91742443 - 2⁹ = 91741931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91742399 and 91742408.

It is not an unprimeable number, because it can be changed into a prime (91742447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9498 + ... + 16543.

It is an arithmetic number, because the mean of its divisors is an integer number (12395992).

Almost surely, 2^91742443 is an apocalyptic number.

91742443 is a deficient number, since it is larger than the sum of its proper divisors (7425493).

91742443 is a wasteful number, since it uses less digits than its factorization.

91742443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26325.

The product of its digits is 24192, while the sum is 34.

The square root of 91742443 is about 9578.2275500220. The cubic root of 91742443 is about 451.0140801205.

The spelling of 91742443 in words is "ninety-one million, seven hundred forty-two thousand, four hundred forty-three".