120305500 has 96 divisors (see below), whose sum is σ = 308730240. Its totient is φ = 40089600.

The previous prime is 120305491. The next prime is 120305501. The reversal of 120305500 is 5503021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120305501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129036 + ... + 129964.

It is an arithmetic number, because the mean of its divisors is an integer number (3215940).

Almost surely, 2^120305500 is an apocalyptic number.

120305500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120305500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154365120).

120305500 is an abundant number, since it is smaller than the sum of its proper divisors (188424740).

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

120305500 is a wasteful number, since it uses less digits than its factorization.

120305500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 120305500 is about 10968.3863899846. The cubic root of 120305500 is about 493.6606311574.

Adding to 120305500 its reverse (5503021), we get a palindrome (125808521).

The spelling of 120305500 in words is "one hundred twenty million, three hundred five thousand, five hundred".