120765321 has 6 divisors (see below), whose sum is σ = 174438810. Its totient is φ = 80510208.

The previous prime is 120765319. The next prime is 120765329. The reversal of 120765321 is 123567021.

It is a happy number.

120765321 is a `hidden beast` number, since 1 + 2 + 0 + 7 + 653 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 114062400 + 6702921 = 10680^2 + 2589^2 .

It is not a de Polignac number, because 120765321 - 2¹ = 120765319 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120765329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6709176 + ... + 6709193.

It is an arithmetic number, because the mean of its divisors is an integer number (29073135).

Almost surely, 2^120765321 is an apocalyptic number.

It is an amenable number.

120765321 is a deficient number, since it is larger than the sum of its proper divisors (53673489).

120765321 is a wasteful number, since it uses less digits than its factorization.

120765321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13418375 (or 13418372 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 120765321 is about 10989.3275954446. The cubic root of 120765321 is about 494.2887735030.

The spelling of 120765321 in words is "one hundred twenty million, seven hundred sixty-five thousand, three hundred twenty-one".