120539443387 has 6 divisors (see below), whose sum is σ = 132493768484. Its totient is φ = 109581312060.

The previous prime is 120539443379. The next prime is 120539443391. The reversal of 120539443387 is 783344935021.

It is not a de Polignac number, because 120539443387 - 2³ = 120539443379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120539443387.

It is not an unprimeable number, because it can be changed into a prime (120539443327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 498096753 + ... + 498096994.

Almost surely, 2^120539443387 is an apocalyptic number.

120539443387 is a deficient number, since it is larger than the sum of its proper divisors (11954325097).

120539443387 is an equidigital number, since it uses as much as digits as its factorization.

120539443387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996193769 (or 996193758 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 120539443387 in words is "one hundred twenty billion, five hundred thirty-nine million, four hundred forty-three thousand, three hundred eighty-seven".