30120105 has 16 divisors (see below), whose sum is σ = 48263040. Its totient is φ = 16040448.

The previous prime is 30120061. The next prime is 30120113. The reversal of 30120105 is 50102103.

It is not a de Polignac number, because 30120105 - 2¹¹ = 30118057 is a prime.

It is a super-2 number, since 2×30120105² = 1814441450422050, which contains 22 as substring.

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, 15001 + ... + 16889.

It is an arithmetic number, because the mean of its divisors is an integer number (3016440).

Almost surely, 2^30120105 is an apocalyptic number.

It is an amenable number.

30120105 is a deficient number, since it is larger than the sum of its proper divisors (18142935).

30120105 is a wasteful number, since it uses less digits than its factorization.

30120105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 30120105 is about 5488.1786596283. The cubic root of 30120105 is about 311.1373586368.

Adding to 30120105 its reverse (50102103), we get a palindrome (80222208).

The spelling of 30120105 in words is "thirty million, one hundred twenty thousand, one hundred five".