140456065 has 4 divisors (see below), whose sum is σ = 168547284. Its totient is φ = 112364848.

The previous prime is 140456059. The next prime is 140456083. The reversal of 140456065 is 560654041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560654041 = 4231 ⋅132511.

It can be written as a sum of positive squares in 2 ways, for example, as 38526849 + 101929216 = 6207^2 + 10096^2 .

It is a cyclic number.

It is not a de Polignac number, because 140456065 - 2⁷ = 140455937 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14045602 + ... + 14045611.

It is an arithmetic number, because the mean of its divisors is an integer number (42136821).

Almost surely, 2^140456065 is an apocalyptic number.

It is an amenable number.

140456065 is a deficient number, since it is larger than the sum of its proper divisors (28091219).

140456065 is an equidigital number, since it uses as much as digits as its factorization.

140456065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28091218.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 140456065 is about 11851.4161601051. The cubic root of 140456065 is about 519.8126359003.

The spelling of 140456065 in words is "one hundred forty million, four hundred fifty-six thousand, sixty-five".