1300123020 has 96 divisors (see below), whose sum is σ = 4272887808. Its totient is φ = 289135872.

The previous prime is 1300123009. The next prime is 1300123031. The reversal of 1300123020 is 203210031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1300123009) and next prime (1300123031).

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 = 1300122987 and 1300123005.

It is an unprimeable number.

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, 26292 + ... + 57371.

It is an arithmetic number, because the mean of its divisors is an integer number (44509248).

Almost surely, 2^1300123020 is an apocalyptic number.

1300123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300123020 is an abundant number, since it is smaller than the sum of its proper divisors (2972764788).

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

1300123020 is a wasteful number, since it uses less digits than its factorization.

1300123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83719 (or 83717 counting only the distinct ones).

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

The square root of 1300123020 is about 36057.2186947357. The cubic root of 1300123020 is about 1091.4273084246.

Adding to 1300123020 its reverse (203210031), we get a palindrome (1503333051).

The spelling of 1300123020 in words is "one billion, three hundred million, one hundred twenty-three thousand, twenty".