305420120 has 16 divisors (see below), whose sum is σ = 687195360. Its totient is φ = 122168032.

The previous prime is 305420077. The next prime is 305420123. The reversal of 305420120 is 21024503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305420123) 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 3 ways as a sum of consecutive naturals, for example, 3817712 + ... + 3817791.

It is an arithmetic number, because the mean of its divisors is an integer number (42949710).

Almost surely, 2^305420120 is an apocalyptic number.

It is an amenable number.

305420120 is an abundant number, since it is smaller than the sum of its proper divisors (381775240).

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

305420120 is a wasteful number, since it uses less digits than its factorization.

305420120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7635514 (or 7635510 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 305420120 is about 17476.2730580636. The cubic root of 305420120 is about 673.4404746236.

Adding to 305420120 its reverse (21024503), we get a palindrome (326444623).

The spelling of 305420120 in words is "three hundred five million, four hundred twenty thousand, one hundred twenty".