120018489 has 4 divisors (see below), whose sum is σ = 160024656. Its totient is φ = 80012324.

The previous prime is 120018473. The next prime is 120018511. The reversal of 120018489 is 984810021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120018489 - 2⁴ = 120018473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120018469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20003079 + ... + 20003084.

It is an arithmetic number, because the mean of its divisors is an integer number (40006164).

Almost surely, 2^120018489 is an apocalyptic number.

It is an amenable number.

120018489 is a deficient number, since it is larger than the sum of its proper divisors (40006167).

120018489 is an equidigital number, since it uses as much as digits as its factorization.

120018489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40006166.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 120018489 is about 10955.2950211302. The cubic root of 120018489 is about 493.2677456735.

The spelling of 120018489 in words is "one hundred twenty million, eighteen thousand, four hundred eighty-nine".