1305243250141 has 4 divisors (see below), whose sum is σ = 1305247513500. Its totient is φ = 1305238986784.

The previous prime is 1305243250111. The next prime is 1305243250169. The reversal of 1305243250141 is 1410523425031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 796797243225 + 508446006916 = 892635^2 + 713054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305243250141 - 2³⁷ = 1167804296669 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 (1305243250111) 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, 1633666 + ... + 2297683.

It is an arithmetic number, because the mean of its divisors is an integer number (326311878375).

Almost surely, 2^{1305243250141} is an apocalyptic number.

It is an amenable number.

1305243250141 is a deficient number, since it is larger than the sum of its proper divisors (4263359).

1305243250141 is an equidigital number, since it uses as much as digits as its factorization.

1305243250141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263358.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1305243250141 its reverse (1410523425031), we get a palindrome (2715766675172).

The spelling of 1305243250141 in words is "one trillion, three hundred five billion, two hundred forty-three million, two hundred fifty thousand, one hundred forty-one".