1300120320 has 72 divisors (see below), whose sum is σ = 4152271536. Its totient is φ = 346697728.

The previous prime is 1300120313. The next prime is 1300120331. The reversal of 1300120320 is 230210031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1300120296 and 1300120305.

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 7 ways as a sum of consecutive naturals, for example, 165447 + ... + 173126.

It is an arithmetic number, because the mean of its divisors is an integer number (57670438).

Almost surely, 2^1300120320 is an apocalyptic number.

1300120320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300120320 is an abundant number, since it is smaller than the sum of its proper divisors (2852151216).

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

1300120320 is an equidigital number, since it uses as much as digits as its factorization.

1300120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338597 (or 338583 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1300120320 is about 36057.1812542245. The cubic root of 1300120320 is about 1091.4265528920.

Adding to 1300120320 its reverse (230210031), we get a palindrome (1530330351).

The spelling of 1300120320 in words is "one billion, three hundred million, one hundred twenty thousand, three hundred twenty".