140091871 has 2 divisors, whose sum is σ = 140091872. Its totient is φ = 140091870.

The previous prime is 140091859. The next prime is 140091877. The reversal of 140091871 is 178190041.

It is a strong prime.

It is an emirp because it is prime and its reverse (178190041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140091871 - 2⁵ = 140091839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140091877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70045935 + 70045936.

It is an arithmetic number, because the mean of its divisors is an integer number (70045936).

Almost surely, 2^140091871 is an apocalyptic number.

140091871 is a deficient number, since it is larger than the sum of its proper divisors (1).

140091871 is an equidigital number, since it uses as much as digits as its factorization.

140091871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 140091871 is about 11836.0411878297. The cubic root of 140091871 is about 519.3629662127.

The spelling of 140091871 in words is "one hundred forty million, ninety-one thousand, eight hundred seventy-one".