1300030120 has 64 divisors (see below), whose sum is σ = 3132075600. Its totient is φ = 483901440.

The previous prime is 1300030117. The next prime is 1300030129. The reversal of 1300030120 is 210300031.

It can be written as a sum of positive squares in 8 ways, for example, as 685287684 + 614742436 = 26178^2 + 24794^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1300030097 and 1300030106.

It is not an unprimeable number, because it can be changed into a prime (1300030129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49780 + ... + 71260.

Almost surely, 2^1300030120 is an apocalyptic number.

1300030120 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 1300030120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1566037800).

1300030120 is an abundant number, since it is smaller than the sum of its proper divisors (1832045480).

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

1300030120 is a wasteful number, since it uses less digits than its factorization.

1300030120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21598 (or 21594 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1300030120 is about 36055.9304414683. The cubic root of 1300030120 is about 1091.4013119072.

Adding to 1300030120 its reverse (210300031), we get a palindrome (1510330151).

The spelling of 1300030120 in words is "one billion, three hundred million, thirty thousand, one hundred twenty".