120440081 has 2 divisors, whose sum is σ = 120440082. Its totient is φ = 120440080.

The previous prime is 120440077. The next prime is 120440129. The reversal of 120440081 is 180044021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 29333056 = 9545^2 + 5416^2 .

It is a cyclic number.

It is not a de Polignac number, because 120440081 - 2² = 120440077 is a prime.

It is a super-2 number, since 2×120440081² = 29011626222573122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (120440041) 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, 60220040 + 60220041.

It is an arithmetic number, because the mean of its divisors is an integer number (60220041).

Almost surely, 2^120440081 is an apocalyptic number.

It is an amenable number.

120440081 is a deficient number, since it is larger than the sum of its proper divisors (1).

120440081 is an equidigital number, since it uses as much as digits as its factorization.

120440081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 120440081 is about 10974.5196250223. The cubic root of 120440081 is about 493.8446420939.

The spelling of 120440081 in words is "one hundred twenty million, four hundred forty thousand, eighty-one".