140390171 has 2 divisors, whose sum is σ = 140390172. Its totient is φ = 140390170.

The previous prime is 140390153. The next prime is 140390207. The reversal of 140390171 is 171093041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140390171 - 2¹⁴ = 140373787 is a prime.

It is a super-2 number, since 2×140390171² = 39418800226818482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140390171.

It is not a weakly prime, because it can be changed into another prime (140390771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70195085 + 70195086.

It is an arithmetic number, because the mean of its divisors is an integer number (70195086).

Almost surely, 2^140390171 is an apocalyptic number.

140390171 is a deficient number, since it is larger than the sum of its proper divisors (1).

140390171 is an equidigital number, since it uses as much as digits as its factorization.

140390171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 140390171 is about 11848.6358286513. The cubic root of 140390171 is about 519.7313343401.

The spelling of 140390171 in words is "one hundred forty million, three hundred ninety thousand, one hundred seventy-one".