1304241255440 has 20 divisors (see below), whose sum is σ = 3032360919084. Its totient is φ = 521696502144.

The previous prime is 1304241255431. The next prime is 1304241255487. The reversal of 1304241255440 is 445521424031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 881465610496 + 422775644944 = 938864^2 + 650212^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1304241255440.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8151507767 + ... + 8151507926.

Almost surely, 2^{1304241255440} is an apocalyptic number.

1304241255440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304241255440 is an abundant number, since it is smaller than the sum of its proper divisors (1728119663644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1304241255440 is a wasteful number, since it uses less digits than its factorization.

1304241255440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16303015706 (or 16303015700 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 1304241255440 its reverse (445521424031), we get a palindrome (1749762679471).

The spelling of 1304241255440 in words is "one trillion, three hundred four billion, two hundred forty-one million, two hundred fifty-five thousand, four hundred forty".