120984565 has 12 divisors (see below), whose sum is σ = 157209444. Its totient is φ = 89341824.

The previous prime is 120984527. The next prime is 120984569. The reversal of 120984565 is 565489021.

It can be written as a sum of positive squares in 6 ways, for example, as 29571844 + 91412721 = 5438^2 + 9561^2 .

It is not a de Polignac number, because 120984565 - 2¹⁵ = 120951797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120984569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70744 + ... + 72433.

It is an arithmetic number, because the mean of its divisors is an integer number (13100787).

Almost surely, 2^120984565 is an apocalyptic number.

It is an amenable number.

120984565 is a deficient number, since it is larger than the sum of its proper divisors (36224879).

120984565 is a wasteful number, since it uses less digits than its factorization.

120984565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143208 (or 143195 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 120984565 is about 10999.2983867154. The cubic root of 120984565 is about 494.5877123397.

The spelling of 120984565 in words is "one hundred twenty million, nine hundred eighty-four thousand, five hundred sixty-five".