7142791 has 2 divisors, whose sum is σ = 7142792. Its totient is φ = 7142790.

The previous prime is 7142783. The next prime is 7142809. The reversal of 7142791 is 1972417.

It is a weak prime.

It is an emirp because it is prime and its reverse (1972417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7142791 - 2³ = 7142783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7146791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3571395 + 3571396.

It is an arithmetic number, because the mean of its divisors is an integer number (3571396).

Almost surely, 2^7142791 is an apocalyptic number.

7142791 is a deficient number, since it is larger than the sum of its proper divisors (1).

7142791 is an equidigital number, since it uses as much as digits as its factorization.

7142791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 31.

The square root of 7142791 is about 2672.6000449001. The cubic root of 7142791 is about 192.5850841058.

The spelling of 7142791 in words is "seven million, one hundred forty-two thousand, seven hundred ninety-one".