140123040961 has 2 divisors, whose sum is σ = 140123040962. Its totient is φ = 140123040960.

The previous prime is 140123040949. The next prime is 140123040989. The reversal of 140123040961 is 169040321041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139245400336 + 877640625 = 373156^2 + 29625^2 .

It is a cyclic number.

It is not a de Polignac number, because 140123040961 - 2²⁵ = 140089486529 is a prime.

It is not a weakly prime, because it can be changed into another prime (140123040061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70061520480 + 70061520481.

It is an arithmetic number, because the mean of its divisors is an integer number (70061520481).

Almost surely, 2^140123040961 is an apocalyptic number.

It is an amenable number.

140123040961 is a deficient number, since it is larger than the sum of its proper divisors (1).

140123040961 is an equidigital number, since it uses as much as digits as its factorization.

140123040961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 140123040961 in words is "one hundred forty billion, one hundred twenty-three million, forty thousand, nine hundred sixty-one".