140386171 has 2 divisors, whose sum is σ = 140386172. Its totient is φ = 140386170.

The previous prime is 140386163. The next prime is 140386201. The reversal of 140386171 is 171683041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140386171 - 2³ = 140386163 is a prime.

It is not a weakly prime, because it can be changed into another prime (140386151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70193085 + 70193086.

It is an arithmetic number, because the mean of its divisors is an integer number (70193086).

Almost surely, 2^140386171 is an apocalyptic number.

140386171 is a deficient number, since it is larger than the sum of its proper divisors (1).

140386171 is an equidigital number, since it uses as much as digits as its factorization.

140386171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 140386171 is about 11848.4670316459. The cubic root of 140386171 is about 519.7263982275.

The spelling of 140386171 in words is "one hundred forty million, three hundred eighty-six thousand, one hundred seventy-one".