120000446509 has 4 divisors (see below), whose sum is σ = 121644288316. Its totient is φ = 118356604704.

The previous prime is 120000446479. The next prime is 120000446543. The reversal of 120000446509 is 905644000021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 905644000021 = 29 ⋅31229103449.

It can be written as a sum of positive squares in 2 ways, for example, as 75077644009 + 44922802500 = 274003^2 + 211950^2 .

It is a cyclic number.

It is not a de Polignac number, because 120000446509 - 2⁷ = 120000446381 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 (120000446809) 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 3 ways as a sum of consecutive naturals, for example, 821920794 + ... + 821920939.

It is an arithmetic number, because the mean of its divisors is an integer number (30411072079).

Almost surely, 2^120000446509 is an apocalyptic number.

It is an amenable number.

120000446509 is a deficient number, since it is larger than the sum of its proper divisors (1643841807).

120000446509 is an equidigital number, since it uses as much as digits as its factorization.

120000446509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643841806.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 120000446509 in words is "one hundred twenty billion, four hundred forty-six thousand, five hundred nine".