30120102 has 12 divisors (see below), whose sum is σ = 65260260. Its totient is φ = 10040028.

The previous prime is 30120061. The next prime is 30120113. The reversal of 30120102 is 20102103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 836652 + ... + 836687.

It is an arithmetic number, because the mean of its divisors is an integer number (5438355).

Almost surely, 2^30120102 is an apocalyptic number.

30120102 is an abundant number, since it is smaller than the sum of its proper divisors (35140158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30120102 is a wasteful number, since it uses less digits than its factorization.

30120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673347 (or 1673344 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 30120102 is about 5488.1783863136. The cubic root of 30120102 is about 311.1373483069.

Adding to 30120102 its reverse (20102103), we get a palindrome (50222205).

The spelling of 30120102 in words is "thirty million, one hundred twenty thousand, one hundred two".