1305140015 has 8 divisors (see below), whose sum is σ = 1574918640. Its totient is φ = 1038278272.

The previous prime is 1305140009. The next prime is 1305140017. The reversal of 1305140015 is 5100415031.

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

It is a cyclic number.

It is not a de Polignac number, because 1305140015 - 2¹² = 1305135919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305140017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728234 + ... + 730023.

It is an arithmetic number, because the mean of its divisors is an integer number (196864830).

Almost surely, 2^1305140015 is an apocalyptic number.

1305140015 is a deficient number, since it is larger than the sum of its proper divisors (269778625).

1305140015 is a wasteful number, since it uses less digits than its factorization.

1305140015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458441.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1305140015 is about 36126.7216198758. The cubic root of 1305140015 is about 1092.8293955147.

Adding to 1305140015 its reverse (5100415031), we get a palindrome (6405555046).

The spelling of 1305140015 in words is "one billion, three hundred five million, one hundred forty thousand, fifteen".