120105555 has 16 divisors (see below), whose sum is σ = 202283520. Its totient is φ = 60684768.

The previous prime is 120105547. The next prime is 120105611. The reversal of 120105555 is 555501021.

It is not a de Polignac number, because 120105555 - 2³ = 120105547 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210427 + ... + 210996.

It is an arithmetic number, because the mean of its divisors is an integer number (12642720).

Almost surely, 2^120105555 is an apocalyptic number.

120105555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120105555 is a deficient number, since it is larger than the sum of its proper divisors (82177965).

120105555 is a wasteful number, since it uses less digits than its factorization.

120105555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421450.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 120105555 is about 10959.2679956282. The cubic root of 120105555 is about 493.3869952686.

Adding to 120105555 its reverse (555501021), we get a palindrome (675606576).

The spelling of 120105555 in words is "one hundred twenty million, one hundred five thousand, five hundred fifty-five".