120320055 has 12 divisors (see below), whose sum is σ = 208554840. Its totient is φ = 64170672.

The previous prime is 120320051. The next prime is 120320059. The reversal of 120320055 is 550023021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120320051) and next prime (120320059).

It is not a de Polignac number, because 120320055 - 2² = 120320051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120320051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1336845 + ... + 1336934.

It is an arithmetic number, because the mean of its divisors is an integer number (17379570).

Almost surely, 2^120320055 is an apocalyptic number.

120320055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120320055 is a deficient number, since it is larger than the sum of its proper divisors (88234785).

120320055 is a wasteful number, since it uses less digits than its factorization.

120320055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673790 (or 2673787 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 120320055 is about 10969.0498676959. The cubic root of 120320055 is about 493.6805386449.

Adding to 120320055 its reverse (550023021), we get a palindrome (670343076).

The spelling of 120320055 in words is "one hundred twenty million, three hundred twenty thousand, fifty-five".