140351641 has 2 divisors, whose sum is σ = 140351642. Its totient is φ = 140351640.

The previous prime is 140351623. The next prime is 140351647. The reversal of 140351641 is 146153041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88454025 + 51897616 = 9405^2 + 7204^2 .

It is a cyclic number.

It is not a de Polignac number, because 140351641 - 2¹⁵ = 140318873 is a prime.

It is not a weakly prime, because it can be changed into another prime (140351647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70175820 + 70175821.

It is an arithmetic number, because the mean of its divisors is an integer number (70175821).

Almost surely, 2^140351641 is an apocalyptic number.

It is an amenable number.

140351641 is a deficient number, since it is larger than the sum of its proper divisors (1).

140351641 is an equidigital number, since it uses as much as digits as its factorization.

140351641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 140351641 is about 11847.0097915044. The cubic root of 140351641 is about 519.6837833365.

The spelling of 140351641 in words is "one hundred forty million, three hundred fifty-one thousand, six hundred forty-one".