120798581 has 2 divisors, whose sum is σ = 120798582. Its totient is φ = 120798580.

The previous prime is 120798577. The next prime is 120798589. The reversal of 120798581 is 185897021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85396081 + 35402500 = 9241^2 + 5950^2 .

It is a cyclic number.

It is not a de Polignac number, because 120798581 - 2² = 120798577 is a prime.

It is a super-2 number, since 2×120798581² = 29184594343227122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120798589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60399290 + 60399291.

It is an arithmetic number, because the mean of its divisors is an integer number (60399291).

Almost surely, 2^120798581 is an apocalyptic number.

It is an amenable number.

120798581 is a deficient number, since it is larger than the sum of its proper divisors (1).

120798581 is an equidigital number, since it uses as much as digits as its factorization.

120798581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 120798581 is about 10990.8407776657. The cubic root of 120798581 is about 494.3341467262.

The spelling of 120798581 in words is "one hundred twenty million, seven hundred ninety-eight thousand, five hundred eighty-one".