120505105 has 24 divisors (see below), whose sum is σ = 167870016. Its totient is φ = 81348960.

The previous prime is 120505103. The next prime is 120505117. The reversal of 120505105 is 501505021.

It is not a de Polignac number, because 120505105 - 2¹ = 120505103 is a prime.

It is a super-2 number, since 2×120505105² = 29042960662122050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120505103) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 176094 + ... + 176776.

It is an arithmetic number, because the mean of its divisors is an integer number (6994584).

Almost surely, 2^120505105 is an apocalyptic number.

It is an amenable number.

120505105 is a deficient number, since it is larger than the sum of its proper divisors (47364911).

120505105 is an frugal number, since it uses more digits than its factorization.

120505105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 120505105 is about 10977.4817239657. The cubic root of 120505105 is about 493.9334994925.

The spelling of 120505105 in words is "one hundred twenty million, five hundred five thousand, one hundred five".