140668271 has 2 divisors, whose sum is σ = 140668272. Its totient is φ = 140668270.

The previous prime is 140668261. The next prime is 140668279. The reversal of 140668271 is 172866041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140668271 is a prime.

It is a super-2 number, since 2×140668271² = 39575124932258882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140668279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70334135 + 70334136.

It is an arithmetic number, because the mean of its divisors is an integer number (70334136).

Almost surely, 2^140668271 is an apocalyptic number.

140668271 is a deficient number, since it is larger than the sum of its proper divisors (1).

140668271 is an equidigital number, since it uses as much as digits as its factorization.

140668271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 140668271 is about 11860.3655508589. The cubic root of 140668271 is about 520.0742879566.

The spelling of 140668271 in words is "one hundred forty million, six hundred sixty-eight thousand, two hundred seventy-one".