120559639 has 6 divisors (see below), whose sum is σ = 123573560. Its totient is φ = 117617520.

The previous prime is 120559627. The next prime is 120559669. The reversal of 120559639 is 936955021.

It is a happy number.

It is not a de Polignac number, because 120559639 - 2⁷ = 120559511 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 (120559669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34179 + ... + 37540.

Almost surely, 2^120559639 is an apocalyptic number.

120559639 is a deficient number, since it is larger than the sum of its proper divisors (3013921).

120559639 is an frugal number, since it uses more digits than its factorization.

120559639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71801 (or 71760 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 120559639 is about 10979.9653460291. The cubic root of 120559639 is about 494.0079973245.

The spelling of 120559639 in words is "one hundred twenty million, five hundred fifty-nine thousand, six hundred thirty-nine".