120509445 has 16 divisors (see below), whose sum is σ = 220360320. Its totient is φ = 55089984.

The previous prime is 120509437. The next prime is 120509491. The reversal of 120509445 is 544905021.

It is not a de Polignac number, because 120509445 - 2³ = 120509437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573750 + ... + 573959.

It is an arithmetic number, because the mean of its divisors is an integer number (13772520).

Almost surely, 2^120509445 is an apocalyptic number.

120509445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120509445 is a deficient number, since it is larger than the sum of its proper divisors (99850875).

120509445 is a wasteful number, since it uses less digits than its factorization.

120509445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147724.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 120509445 is about 10977.6793995817. The cubic root of 120509445 is about 493.9394291047.

The spelling of 120509445 in words is "one hundred twenty million, five hundred nine thousand, four hundred forty-five".