1306057239 has 12 divisors (see below), whose sum is σ = 1887388776. Its totient is φ = 870307152.

The previous prime is 1306057229. The next prime is 1306057243. The reversal of 1306057239 is 9327506031.

1306057239 is a `hidden beast` number, since 13 + 0 + 605 + 7 + 2 + 39 = 666.

It is not a de Polignac number, because 1306057239 - 2¹⁵ = 1306024471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306057219) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11604 + ... + 52409.

It is an arithmetic number, because the mean of its divisors is an integer number (157282398).

Almost surely, 2^1306057239 is an apocalyptic number.

1306057239 is a deficient number, since it is larger than the sum of its proper divisors (581331537).

1306057239 is a wasteful number, since it uses less digits than its factorization.

1306057239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66286 (or 66283 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 1306057239 is about 36139.4139271793. The cubic root of 1306057239 is about 1093.0853411387.

The spelling of 1306057239 in words is "one billion, three hundred six million, fifty-seven thousand, two hundred thirty-nine".