120715389 has 6 divisors (see below), whose sum is σ = 174366686. Its totient is φ = 80476920.

The previous prime is 120715381. The next prime is 120715391. The reversal of 120715389 is 983517021.

It can be written as a sum of positive squares in only one way, i.e., 108056025 + 12659364 = 10395^2 + 3558^2 .

It is not a de Polignac number, because 120715389 - 2³ = 120715381 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 (120715381) 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 in 5 ways as a sum of consecutive naturals, for example, 6706402 + ... + 6706419.

Almost surely, 2^120715389 is an apocalyptic number.

It is an amenable number.

120715389 is a deficient number, since it is larger than the sum of its proper divisors (53651297).

120715389 is a wasteful number, since it uses less digits than its factorization.

120715389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13412827 (or 13412824 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 120715389 is about 10987.0555200199. The cubic root of 120715389 is about 494.2206407279.

It can be divided in two parts, 120715 and 389, that added together give a square (121104 = 348²).

The spelling of 120715389 in words is "one hundred twenty million, seven hundred fifteen thousand, three hundred eighty-nine".