1305443304442 has 16 divisors (see below), whose sum is σ = 1970734527720. Its totient is φ = 648532205568.

The previous prime is 1305443304437. The next prime is 1305443304461. The reversal of 1305443304442 is 2444033445031.

It can be written as a sum of positive squares in 4 ways, for example, as 1162280204281 + 143163100161 = 1078091^2 + 378369^2 .

It is a super-2 number, since 2×1305443304442² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7073434 + ... + 7255642.

Almost surely, 2^{1305443304442} is an apocalyptic number.

1305443304442 is a deficient number, since it is larger than the sum of its proper divisors (665291223278).

1305443304442 is a wasteful number, since it uses less digits than its factorization.

1305443304442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205185.

The product of its (nonzero) digits is 276480, while the sum is 37.

Adding to 1305443304442 its reverse (2444033445031), we get a palindrome (3749476749473).

The spelling of 1305443304442 in words is "one trillion, three hundred five billion, four hundred forty-three million, three hundred four thousand, four hundred forty-two".