120040255 has 4 divisors (see below), whose sum is σ = 144048312. Its totient is φ = 96032200.

The previous prime is 120040241. The next prime is 120040259. The reversal of 120040255 is 552040021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120040255 - 2⁷ = 120040127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120040259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12004021 + ... + 12004030.

It is an arithmetic number, because the mean of its divisors is an integer number (36012078).

Almost surely, 2^120040255 is an apocalyptic number.

120040255 is a deficient number, since it is larger than the sum of its proper divisors (24008057).

120040255 is an equidigital number, since it uses as much as digits as its factorization.

120040255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24008056.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 120040255 is about 10956.2883770007. The cubic root of 120040255 is about 493.2975627927.

Adding to 120040255 its reverse (552040021), we get a palindrome (672080276).

It can be divided in two parts, 120040 and 255, that added together give a triangular number (120295 = T₄₉₀).

The spelling of 120040255 in words is "one hundred twenty million, forty thousand, two hundred fifty-five".