13123303340542 has 32 divisors (see below), whose sum is σ = 21465336960000. Its totient is φ = 5993598362976.

The previous prime is 13123303340533. The next prime is 13123303340569. The reversal of 13123303340542 is 24504330332131.

It is a junction number, because it is equal to n+sod(n) for n = 13123303340498 and 13123303340507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7489042 + ... + 9073717.

It is an arithmetic number, because the mean of its divisors is an integer number (670791780000).

Almost surely, 2^{13123303340542} is an apocalyptic number.

13123303340542 is a deficient number, since it is larger than the sum of its proper divisors (8342033619458).

13123303340542 is a wasteful number, since it uses less digits than its factorization.

13123303340542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16563528.

The product of its (nonzero) digits is 77760, while the sum is 34.

Adding to 13123303340542 its reverse (24504330332131), we get a palindrome (37627633672673).

The spelling of 13123303340542 in words is "thirteen trillion, one hundred twenty-three billion, three hundred three million, three hundred forty thousand, five hundred forty-two".