120165439 has 2 divisors, whose sum is σ = 120165440. Its totient is φ = 120165438.

The previous prime is 120165433. The next prime is 120165449. The reversal of 120165439 is 934561021.

It is a weak prime.

It is an emirp because it is prime and its reverse (934561021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120165439 - 2³ = 120165431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120165439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120165431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60082719 + 60082720.

It is an arithmetic number, because the mean of its divisors is an integer number (60082720).

Almost surely, 2^120165439 is an apocalyptic number.

120165439 is a deficient number, since it is larger than the sum of its proper divisors (1).

120165439 is an equidigital number, since it uses as much as digits as its factorization.

120165439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 120165439 is about 10961.9997719394. Note that the first 3 decimals coincide. The cubic root of 120165439 is about 493.4689817004.

The spelling of 120165439 in words is "one hundred twenty million, one hundred sixty-five thousand, four hundred thirty-nine".