140134817 has 2 divisors, whose sum is σ = 140134818. Its totient is φ = 140134816.

The previous prime is 140134801. The next prime is 140134829. The reversal of 140134817 is 718431041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139617856 + 516961 = 11816^2 + 719^2 .

It is an emirp because it is prime and its reverse (718431041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140134817 - 2⁴ = 140134801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140134817.

It is not a weakly prime, because it can be changed into another prime (140134847) by changing a digit.

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 as a sum of consecutive naturals, namely, 70067408 + 70067409.

It is an arithmetic number, because the mean of its divisors is an integer number (70067409).

Almost surely, 2^140134817 is an apocalyptic number.

It is an amenable number.

140134817 is a deficient number, since it is larger than the sum of its proper divisors (1).

140134817 is an equidigital number, since it uses as much as digits as its factorization.

140134817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 140134817 is about 11837.8552533810. The cubic root of 140134817 is about 519.4160320639.

Adding to 140134817 its reverse (718431041), we get a palindrome (858565858).

The spelling of 140134817 in words is "one hundred forty million, one hundred thirty-four thousand, eight hundred seventeen".