120442489 has 2 divisors, whose sum is σ = 120442490. Its totient is φ = 120442488.

The previous prime is 120442457. The next prime is 120442537. The reversal of 120442489 is 984244021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67371264 + 53071225 = 8208^2 + 7285^2 .

It is a cyclic number.

It is not a de Polignac number, because 120442489 - 2⁵ = 120442457 is a prime.

It is not a weakly prime, because it can be changed into another prime (120442429) 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, 60221244 + 60221245.

It is an arithmetic number, because the mean of its divisors is an integer number (60221245).

Almost surely, 2^120442489 is an apocalyptic number.

It is an amenable number.

120442489 is a deficient number, since it is larger than the sum of its proper divisors (1).

120442489 is an equidigital number, since it uses as much as digits as its factorization.

120442489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 120442489 is about 10974.6293331483. The cubic root of 120442489 is about 493.8479332739.

The spelling of 120442489 in words is "one hundred twenty million, four hundred forty-two thousand, four hundred eighty-nine".