140271997 has 2 divisors, whose sum is σ = 140271998. Its totient is φ = 140271996.

The previous prime is 140271983. The next prime is 140272007. The reversal of 140271997 is 799172041.

140271997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82192356 + 58079641 = 9066^2 + 7621^2 .

It is a cyclic number.

It is not a de Polignac number, because 140271997 - 2¹⁹ = 139747709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140271907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70135998 + 70135999.

It is an arithmetic number, because the mean of its divisors is an integer number (70135999).

Almost surely, 2^140271997 is an apocalyptic number.

It is an amenable number.

140271997 is a deficient number, since it is larger than the sum of its proper divisors (1).

140271997 is an equidigital number, since it uses as much as digits as its factorization.

140271997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 140271997 is about 11843.6479599826. The cubic root of 140271997 is about 519.5854647456.

The spelling of 140271997 in words is "one hundred forty million, two hundred seventy-one thousand, nine hundred ninety-seven".