120688505 has 8 divisors (see below), whose sum is σ = 165515712. Its totient is φ = 82757808.

The previous prime is 120688501. The next prime is 120688511. The reversal of 120688505 is 505886021.

It is a happy number.

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

It is not a de Polignac number, because 120688505 - 2² = 120688501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 3448243 = 120688505 / (1 + 2 + 0 + 6 + 8 + 8 + 5 + 0 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120688501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724087 + ... + 1724156.

It is an arithmetic number, because the mean of its divisors is an integer number (20689464).

Almost surely, 2^120688505 is an apocalyptic number.

It is an amenable number.

120688505 is a deficient number, since it is larger than the sum of its proper divisors (44827207).

120688505 is an equidigital number, since it uses as much as digits as its factorization.

120688505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448255.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 120688505 is about 10985.8320121873. The cubic root of 120688505 is about 494.1839494265.

The spelling of 120688505 in words is "one hundred twenty million, six hundred eighty-eight thousand, five hundred five".