120243115 has 16 divisors (see below), whose sum is σ = 154033920. Its totient is φ = 89843040.

The previous prime is 120243113. The next prime is 120243169. The reversal of 120243115 is 511342021.

It is not a de Polignac number, because 120243115 - 2¹ = 120243113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 120243092 and 120243101.

It is not an unprimeable number, because it can be changed into a prime (120243113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2169 + ... + 15658.

It is an arithmetic number, because the mean of its divisors is an integer number (9627120).

Almost surely, 2^120243115 is an apocalyptic number.

120243115 is a deficient number, since it is larger than the sum of its proper divisors (33790805).

120243115 is a wasteful number, since it uses less digits than its factorization.

120243115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17922.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 120243115 is about 10965.5421662588. The cubic root of 120243115 is about 493.5752863662.

Adding to 120243115 its reverse (511342021), we get a palindrome (631585136).

The spelling of 120243115 in words is "one hundred twenty million, two hundred forty-three thousand, one hundred fifteen".