120528009 has 48 divisors (see below), whose sum is σ = 205304320. Its totient is φ = 66718080.

The previous prime is 120528007. The next prime is 120528013. The reversal of 120528009 is 900825021.

It is not a de Polignac number, because 120528009 - 2¹ = 120528007 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120528007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 303399 + ... + 303795.

Almost surely, 2^120528009 is an apocalyptic number.

It is an amenable number.

120528009 is a deficient number, since it is larger than the sum of its proper divisors (84776311).

120528009 is a wasteful number, since it uses less digits than its factorization.

120528009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 120528009 is about 10978.5249009145. The cubic root of 120528009 is about 493.9647909364.

The spelling of 120528009 in words is "one hundred twenty million, five hundred twenty-eight thousand, nine".