1345242440005 has 16 divisors (see below), whose sum is σ = 1670107607280. Its totient is φ = 1038989564928.

The previous prime is 1345242439969. The next prime is 1345242440021. The reversal of 1345242440005 is 5000442425431.

It can be written as a sum of positive squares in 8 ways, for example, as 83846151844 + 1261396288161 = 289562^2 + 1123119^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345242440005 - 2²³ = 1345234051397 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1204909 + ... + 2035261.

It is an arithmetic number, because the mean of its divisors is an integer number (104381725455).

Almost surely, 2^{1345242440005} is an apocalyptic number.

It is an amenable number.

1345242440005 is a deficient number, since it is larger than the sum of its proper divisors (324865167275).

1345242440005 is a wasteful number, since it uses less digits than its factorization.

1345242440005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841560.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 1345242440005 its reverse (5000442425431), we get a palindrome (6345684865436).

The spelling of 1345242440005 in words is "one trillion, three hundred forty-five billion, two hundred forty-two million, four hundred forty thousand, five".