140121531990269 has 2 divisors, whose sum is σ = 140121531990270. Its totient is φ = 140121531990268.

The previous prime is 140121531990227. The next prime is 140121531990289. The reversal of 140121531990269 is 962099135121041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124024705943044 + 16096826047225 = 11136638^2 + 4012085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140121531990269 is a prime.

It is a super-2 number, since 2×140121531990269² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140121531990269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140121531990289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70060765995134 + 70060765995135.

It is an arithmetic number, because the mean of its divisors is an integer number (70060765995135).

Almost surely, 2^{140121531990269} is an apocalyptic number.

It is an amenable number.

140121531990269 is a deficient number, since it is larger than the sum of its proper divisors (1).

140121531990269 is an equidigital number, since it uses as much as digits as its factorization.

140121531990269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The spelling of 140121531990269 in words is "one hundred forty trillion, one hundred twenty-one billion, five hundred thirty-one million, nine hundred ninety thousand, two hundred sixty-nine".