140026591 has 2 divisors, whose sum is σ = 140026592. Its totient is φ = 140026590.

The previous prime is 140026589. The next prime is 140026609. The reversal of 140026591 is 195620041.

140026591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (195620041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140026591 - 2¹ = 140026589 is a prime.

Together with 140026589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140026511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70013295 + 70013296.

It is an arithmetic number, because the mean of its divisors is an integer number (70013296).

Almost surely, 2^140026591 is an apocalyptic number.

140026591 is a deficient number, since it is larger than the sum of its proper divisors (1).

140026591 is an equidigital number, since it uses as much as digits as its factorization.

140026591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 140026591 is about 11833.2831876872. The cubic root of 140026591 is about 519.2822827732.

The spelling of 140026591 in words is "one hundred forty million, twenty-six thousand, five hundred ninety-one".