91423842 has 8 divisors (see below), whose sum is σ = 182847696. Its totient is φ = 30474612.

The previous prime is 91423831. The next prime is 91423853. The reversal of 91423842 is 24832419.

It is an interprime number because it is at equal distance from previous prime (91423831) and next prime (91423853).

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

91423842 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7618648 + ... + 7618659.

It is an arithmetic number, because the mean of its divisors is an integer number (22855962).

Almost surely, 2^91423842 is an apocalyptic number.

91423842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91423842 is a wasteful number, since it uses less digits than its factorization.

91423842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15237312.

The product of its digits is 13824, while the sum is 33.

The square root of 91423842 is about 9561.5815637372. The cubic root of 91423842 is about 450.4913842180.

The spelling of 91423842 in words is "ninety-one million, four hundred twenty-three thousand, eight hundred forty-two".