1306708121 has 8 divisors (see below), whose sum is σ = 1313649600. Its totient is φ = 1299777840.

The previous prime is 1306708099. The next prime is 1306708127. The reversal of 1306708121 is 1218076031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1306708121 is a prime.

It is a super-2 number, since 2×1306708121² = 3414972226974701282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1306708127) 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, 332156 + ... + 336066.

It is an arithmetic number, because the mean of its divisors is an integer number (164206200).

Almost surely, 2^1306708121 is an apocalyptic number.

It is an amenable number.

1306708121 is a deficient number, since it is larger than the sum of its proper divisors (6941479).

1306708121 is a wasteful number, since it uses less digits than its factorization.

1306708121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1306708121 is about 36148.4179598499. The cubic root of 1306708121 is about 1093.2668930126.

The spelling of 1306708121 in words is "one billion, three hundred six million, seven hundred eight thousand, one hundred twenty-one".