140121532251317 has 2 divisors, whose sum is σ = 140121532251318. Its totient is φ = 140121532251316.

The previous prime is 140121532251293. The next prime is 140121532251329. The reversal of 140121532251317 is 713152235121041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130588419045841 + 9533113205476 = 11427529^2 + 3087574^2 .

It is a cyclic number.

It is not a de Polignac number, because 140121532251317 - 2¹⁴ = 140121532234933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140121532251367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70060766125658 + 70060766125659.

It is an arithmetic number, because the mean of its divisors is an integer number (70060766125659).

Almost surely, 2^{140121532251317} is an apocalyptic number.

It is an amenable number.

140121532251317 is a deficient number, since it is larger than the sum of its proper divisors (1).

140121532251317 is an equidigital number, since it uses as much as digits as its factorization.

140121532251317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

Adding to 140121532251317 its reverse (713152235121041), we get a palindrome (853273767372358).

The spelling of 140121532251317 in words is "one hundred forty trillion, one hundred twenty-one billion, five hundred thirty-two million, two hundred fifty-one thousand, three hundred seventeen".