120140681 has 2 divisors, whose sum is σ = 120140682. Its totient is φ = 120140680.

The previous prime is 120140677. The next prime is 120140687. The reversal of 120140681 is 186041021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60217600 + 59923081 = 7760^2 + 7741^2 .

It is a cyclic number.

It is not a de Polignac number, because 120140681 - 2² = 120140677 is a prime.

It is a super-2 number, since 2×120140681² = 28867566462287522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120140687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60070340 + 60070341.

It is an arithmetic number, because the mean of its divisors is an integer number (60070341).

Almost surely, 2^120140681 is an apocalyptic number.

It is an amenable number.

120140681 is a deficient number, since it is larger than the sum of its proper divisors (1).

120140681 is an equidigital number, since it uses as much as digits as its factorization.

120140681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 120140681 is about 10960.8704490109. The cubic root of 120140681 is about 493.4350891372.

The spelling of 120140681 in words is "one hundred twenty million, one hundred forty thousand, six hundred eighty-one".