8142791 has 2 divisors, whose sum is σ = 8142792. Its totient is φ = 8142790.

The previous prime is 8142787. The next prime is 8142793. The reversal of 8142791 is 1972418.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8142791 - 2² = 8142787 is a prime.

Together with 8142793, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8142793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4071395 + 4071396.

It is an arithmetic number, because the mean of its divisors is an integer number (4071396).

Almost surely, 2^8142791 is an apocalyptic number.

8142791 is a deficient number, since it is larger than the sum of its proper divisors (1).

8142791 is an equidigital number, since it uses as much as digits as its factorization.

8142791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 8142791 is about 2853.5576041146. The cubic root of 8142791 is about 201.1829147696.

It can be divided in two parts, 81427 and 91, that added together give a palindrome (81518).

The spelling of 8142791 in words is "eight million, one hundred forty-two thousand, seven hundred ninety-one".