140805023 has 2 divisors, whose sum is σ = 140805024. Its totient is φ = 140805022.

The previous prime is 140805013. The next prime is 140805043. The reversal of 140805023 is 320508041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140805023 - 2¹⁸ = 140542879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140805023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140805013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70402511 + 70402512.

It is an arithmetic number, because the mean of its divisors is an integer number (70402512).

Almost surely, 2^140805023 is an apocalyptic number.

140805023 is a deficient number, since it is larger than the sum of its proper divisors (1).

140805023 is an equidigital number, since it uses as much as digits as its factorization.

140805023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 140805023 is about 11866.1292340847. The cubic root of 140805023 is about 520.2427650977.

The spelling of 140805023 in words is "one hundred forty million, eight hundred five thousand, twenty-three".