120936581 has 2 divisors, whose sum is σ = 120936582. Its totient is φ = 120936580.

The previous prime is 120936551. The next prime is 120936661. The reversal of 120936581 is 185639021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62948356 + 57988225 = 7934^2 + 7615^2 .

It is a cyclic number.

It is not a de Polignac number, because 120936581 - 2²² = 116742277 is a prime.

It is a super-2 number, since 2×120936581² = 29251313247939122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120936551) 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, 60468290 + 60468291.

It is an arithmetic number, because the mean of its divisors is an integer number (60468291).

Almost surely, 2^120936581 is an apocalyptic number.

It is an amenable number.

120936581 is a deficient number, since it is larger than the sum of its proper divisors (1).

120936581 is an equidigital number, since it uses as much as digits as its factorization.

120936581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 120936581 is about 10997.1169403621. The cubic root of 120936581 is about 494.5223171245.

The spelling of 120936581 in words is "one hundred twenty million, nine hundred thirty-six thousand, five hundred eighty-one".