123241414415521 has 2 divisors, whose sum is σ = 123241414415522. Its totient is φ = 123241414415520.

The previous prime is 123241414415519. The next prime is 123241414415533. The reversal of 123241414415521 is 125514414142321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72011092824225 + 51230321591296 = 8485935^2 + 7157536^2 .

It is a cyclic number.

It is not a de Polignac number, because 123241414415521 - 2¹ = 123241414415519 is a prime.

Together with 123241414415519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123241414415221) 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, 61620707207760 + 61620707207761.

It is an arithmetic number, because the mean of its divisors is an integer number (61620707207761).

Almost surely, 2^{123241414415521} is an apocalyptic number.

It is an amenable number.

123241414415521 is a deficient number, since it is larger than the sum of its proper divisors (1).

123241414415521 is an equidigital number, since it uses as much as digits as its factorization.

123241414415521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153600, while the sum is 40.

Adding to 123241414415521 its reverse (125514414142321), we get a palindrome (248755828557842).

The spelling of 123241414415521 in words is "one hundred twenty-three trillion, two hundred forty-one billion, four hundred fourteen million, four hundred fifteen thousand, five hundred twenty-one".