8191942 has 12 divisors (see below), whose sum is σ = 13506948. Its totient is φ = 3723500.

The previous prime is 8191921. The next prime is 8191969. The reversal of 8191942 is 2491918.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 8191898 and 8191907.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 16684 + ... + 17167.

It is an arithmetic number, because the mean of its divisors is an integer number (1125579).

Almost surely, 2^8191942 is an apocalyptic number.

8191942 is a deficient number, since it is larger than the sum of its proper divisors (5315006).

8191942 is a wasteful number, since it uses less digits than its factorization.

8191942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33875 (or 33864 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 8191942 is about 2862.1568789988. The cubic root of 8191942 is about 201.5868922306.

The spelling of 8191942 in words is "eight million, one hundred ninety-one thousand, nine hundred forty-two".