120042255 has 16 divisors (see below), whose sum is σ = 192367584. Its totient is φ = 63922560.

The previous prime is 120042211. The next prime is 120042257. The reversal of 120042255 is 552240021.

It is a happy number.

It is not a de Polignac number, because 120042255 - 2⁷ = 120042127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120042257) 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, 4245 + ... + 16065.

It is an arithmetic number, because the mean of its divisors is an integer number (12022974).

Almost surely, 2^120042255 is an apocalyptic number.

120042255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120042255 is a deficient number, since it is larger than the sum of its proper divisors (72325329).

120042255 is a wasteful number, since it uses less digits than its factorization.

120042255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12506.

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

The square root of 120042255 is about 10956.3796484058. The cubic root of 120042255 is about 493.3003024005.

Adding to 120042255 its reverse (552240021), we get a palindrome (672282276).

The spelling of 120042255 in words is "one hundred twenty million, forty-two thousand, two hundred fifty-five".