120240255 has 16 divisors (see below), whose sum is σ = 196859520. Its totient is φ = 62636448.

The previous prime is 120240247. The next prime is 120240257. The reversal of 120240255 is 552042021.

It is a happy number.

It is not a de Polignac number, because 120240255 - 2³ = 120240247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120240257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92565 + ... + 93854.

It is an arithmetic number, because the mean of its divisors is an integer number (12303720).

Almost surely, 2^120240255 is an apocalyptic number.

120240255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120240255 is a deficient number, since it is larger than the sum of its proper divisors (76619265).

120240255 is a wasteful number, since it uses less digits than its factorization.

120240255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186470.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 120240255 is about 10965.4117569747. The cubic root of 120240255 is about 493.5713730818.

Adding to 120240255 its reverse (552042021), we get a palindrome (672282276).

The spelling of 120240255 in words is "one hundred twenty million, two hundred forty thousand, two hundred fifty-five".