1306123260 has 144 divisors (see below), whose sum is σ = 4193604576. Its totient is φ = 302555136.

The previous prime is 1306123249. The next prime is 1306123261. The reversal of 1306123260 is 623216031.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1306123260.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306123261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168592 + ... + 176168.

It is an arithmetic number, because the mean of its divisors is an integer number (29122254).

Almost surely, 2^1306123260 is an apocalyptic number.

1306123260 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 1306123260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2096802288).

1306123260 is an abundant number, since it is smaller than the sum of its proper divisors (2887481316).

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

1306123260 is a wasteful number, since it uses less digits than its factorization.

1306123260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7632 (or 7617 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1306123260 is about 36140.3273366471. The cubic root of 1306123260 is about 1093.1037592624.

Adding to 1306123260 its reverse (623216031), we get a palindrome (1929339291).

The spelling of 1306123260 in words is "one billion, three hundred six million, one hundred twenty-three thousand, two hundred sixty".