120305530 has 16 divisors (see below), whose sum is σ = 227947680. Its totient is φ = 45589392.

The previous prime is 120305519. The next prime is 120305531. The reversal of 120305530 is 35503021.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 120305498 and 120305507.

It is not an unprimeable number, because it can be changed into a prime (120305531) 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, 316404 + ... + 316783.

It is an arithmetic number, because the mean of its divisors is an integer number (14246730).

Almost surely, 2^120305530 is an apocalyptic number.

120305530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120305530 is a deficient number, since it is larger than the sum of its proper divisors (107642150).

120305530 is a wasteful number, since it uses less digits than its factorization.

120305530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633213.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 120305530 is about 10968.3877575512. The cubic root of 120305530 is about 493.6606721913.

Adding to 120305530 its reverse (35503021), we get a palindrome (155808551).

The spelling of 120305530 in words is "one hundred twenty million, three hundred five thousand, five hundred thirty".