305102120 has 32 divisors (see below), whose sum is σ = 690054120. Its totient is φ = 121405440.

The previous prime is 305102101. The next prime is 305102129. The reversal of 305102120 is 21201503.

It is a happy number.

305102120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 100440484 + 204661636 = 10022^2 + 14306^2 .

It is a junction number, because it is equal to n+sod(n) for n = 305102095 and 305102104.

It is not an unprimeable number, because it can be changed into a prime (305102129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12041 + ... + 27480.

Almost surely, 2^305102120 is an apocalyptic number.

It is an amenable number.

305102120 is an abundant number, since it is smaller than the sum of its proper divisors (384952000).

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

305102120 is a wasteful number, since it uses less digits than its factorization.

305102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39725 (or 39721 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 305102120 is about 17467.1726389820. The cubic root of 305102120 is about 673.2066672385.

Adding to 305102120 its reverse (21201503), we get a palindrome (326303623).

The spelling of 305102120 in words is "three hundred five million, one hundred two thousand, one hundred twenty".