120780589 has 4 divisors (see below), whose sum is σ = 120875580. Its totient is φ = 120685600.

The previous prime is 120780497. The next prime is 120780607. The reversal of 120780589 is 985087021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 985087021 = 7109 ⋅138569.

It can be written as a sum of positive squares in 2 ways, for example, as 109558089 + 11222500 = 10467^2 + 3350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120780589 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120780089) 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 in 3 ways as a sum of consecutive naturals, for example, 45562 + ... + 48139.

It is an arithmetic number, because the mean of its divisors is an integer number (30218895).

Almost surely, 2^120780589 is an apocalyptic number.

It is an amenable number.

120780589 is a deficient number, since it is larger than the sum of its proper divisors (94991).

120780589 is an equidigital number, since it uses as much as digits as its factorization.

120780589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94990.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 120780589 is about 10990.0222474752. The cubic root of 120780589 is about 494.3096031112.

It can be divided in two parts, 1207 and 80589, that added together give a square (81796 = 286²).

The spelling of 120780589 in words is "one hundred twenty million, seven hundred eighty thousand, five hundred eighty-nine".