120243665 has 8 divisors (see below), whose sum is σ = 144533760. Its totient is φ = 96034032.

The previous prime is 120243661. The next prime is 120243671. The reversal of 120243665 is 566342021.

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

It is a cyclic number.

It is not a de Polignac number, because 120243665 - 2² = 120243661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120243661) 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, 16775 + ... + 22844.

It is an arithmetic number, because the mean of its divisors is an integer number (18066720).

Almost surely, 2^120243665 is an apocalyptic number.

It is an amenable number.

120243665 is a deficient number, since it is larger than the sum of its proper divisors (24290095).

120243665 is an equidigital number, since it uses as much as digits as its factorization.

120243665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40231.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 120243665 is about 10965.5672447895. The cubic root of 120243665 is about 493.5760389138.

Adding to 120243665 its reverse (566342021), we get a palindrome (686585686).

The spelling of 120243665 in words is "one hundred twenty million, two hundred forty-three thousand, six hundred sixty-five".