140726791 has 2 divisors, whose sum is σ = 140726792. Its totient is φ = 140726790.

The previous prime is 140726783. The next prime is 140726813. The reversal of 140726791 is 197627041.

It is a weak prime.

It is an emirp because it is prime and its reverse (197627041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140726791 - 2³ = 140726783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140726791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140726191) by changing a digit.

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 as a sum of consecutive naturals, namely, 70363395 + 70363396.

It is an arithmetic number, because the mean of its divisors is an integer number (70363396).

Almost surely, 2^140726791 is an apocalyptic number.

140726791 is a deficient number, since it is larger than the sum of its proper divisors (1).

140726791 is an equidigital number, since it uses as much as digits as its factorization.

140726791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 140726791 is about 11862.8323346493. The cubic root of 140726791 is about 520.1463973898.

The spelling of 140726791 in words is "one hundred forty million, seven hundred twenty-six thousand, seven hundred ninety-one".