140171671 has 2 divisors, whose sum is σ = 140171672. Its totient is φ = 140171670.

The previous prime is 140171663. The next prime is 140171741. The reversal of 140171671 is 176171041.

It is a weak prime.

It is an emirp because it is prime and its reverse (176171041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140171671 - 2³ = 140171663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140171611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70085835 + 70085836.

It is an arithmetic number, because the mean of its divisors is an integer number (70085836).

Almost surely, 2^140171671 is an apocalyptic number.

140171671 is a deficient number, since it is larger than the sum of its proper divisors (1).

140171671 is an equidigital number, since it uses as much as digits as its factorization.

140171671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 140171671 is about 11839.4117674824. The cubic root of 140171671 is about 519.4615617450.

The spelling of 140171671 in words is "one hundred forty million, one hundred seventy-one thousand, six hundred seventy-one".