123354240524413 has 2 divisors, whose sum is σ = 123354240524414. Its totient is φ = 123354240524412.

The previous prime is 123354240524371. The next prime is 123354240524479. The reversal of 123354240524413 is 314425042453321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123349944115204 + 4296409209 = 11106302^2 + 65547^2 .

It is an emirp because it is prime and its reverse (314425042453321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123354240524413 - 2⁴¹ = 121155217268861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123354240524413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123354240924413) by changing a digit.

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 as a sum of consecutive naturals, namely, 61677120262206 + 61677120262207.

It is an arithmetic number, because the mean of its divisors is an integer number (61677120262207).

Almost surely, 2^{123354240524413} is an apocalyptic number.

It is an amenable number.

123354240524413 is a deficient number, since it is larger than the sum of its proper divisors (1).

123354240524413 is an equidigital number, since it uses as much as digits as its factorization.

123354240524413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1382400, while the sum is 43.

Adding to 123354240524413 its reverse (314425042453321), we get a palindrome (437779282977734).

The spelling of 123354240524413 in words is "one hundred twenty-three trillion, three hundred fifty-four billion, two hundred forty million, five hundred twenty-four thousand, four hundred thirteen".