1305242545135 has 4 divisors (see below), whose sum is σ = 1566291054168. Its totient is φ = 1044194036104.

The previous prime is 1305242545133. The next prime is 1305242545157. The reversal of 1305242545135 is 5315452425031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1305242545135 - 2¹ = 1305242545133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305242545133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130524254509 + ... + 130524254518.

It is an arithmetic number, because the mean of its divisors is an integer number (391572763542).

Almost surely, 2^{1305242545135} is an apocalyptic number.

1305242545135 is a deficient number, since it is larger than the sum of its proper divisors (261048509033).

1305242545135 is an equidigital number, since it uses as much as digits as its factorization.

1305242545135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261048509032.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 1305242545135 in words is "one trillion, three hundred five billion, two hundred forty-two million, five hundred forty-five thousand, one hundred thirty-five".