120642915 has 8 divisors (see below), whose sum is σ = 193028688. Its totient is φ = 64342880.

The previous prime is 120642911. The next prime is 120642919. The reversal of 120642915 is 519246021.

It is an interprime number because it is at equal distance from previous prime (120642911) and next prime (120642919).

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

It is not a de Polignac number, because 120642915 - 2² = 120642911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120642911) 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, 4021416 + ... + 4021445.

It is an arithmetic number, because the mean of its divisors is an integer number (24128586).

Almost surely, 2^120642915 is an apocalyptic number.

120642915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120642915 is a deficient number, since it is larger than the sum of its proper divisors (72385773).

120642915 is an equidigital number, since it uses as much as digits as its factorization.

120642915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8042869.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 120642915 is about 10983.7568709436. The cubic root of 120642915 is about 494.1217157070.

Adding to 120642915 its reverse (519246021), we get a palindrome (639888936).

The spelling of 120642915 in words is "one hundred twenty million, six hundred forty-two thousand, nine hundred fifteen".