120505765 has 8 divisors (see below), whose sum is σ = 148134168. Its totient is φ = 94053120.

The previous prime is 120505757. The next prime is 120505783. The reversal of 120505765 is 567505021.

It can be written as a sum of positive squares in 4 ways, for example, as 11236 + 120494529 = 106^2 + 10977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120505765 - 2³ = 120505757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293712 + ... + 294121.

It is an arithmetic number, because the mean of its divisors is an integer number (18516771).

Almost surely, 2^120505765 is an apocalyptic number.

It is an amenable number.

120505765 is a deficient number, since it is larger than the sum of its proper divisors (27628403).

120505765 is an equidigital number, since it uses as much as digits as its factorization.

120505765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587879.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 120505765 is about 10977.5117854640. The cubic root of 120505765 is about 493.9344012399.

The spelling of 120505765 in words is "one hundred twenty million, five hundred five thousand, seven hundred sixty-five".