123542521341 has 4 divisors (see below), whose sum is σ = 164723361792. Its totient is φ = 82361680892.

The previous prime is 123542521339. The next prime is 123542521391. The reversal of 123542521341 is 143125245321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123542521341 - 2¹ = 123542521339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123542521391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20590420221 + ... + 20590420226.

It is an arithmetic number, because the mean of its divisors is an integer number (41180840448).

Almost surely, 2^123542521341 is an apocalyptic number.

It is an amenable number.

123542521341 is a deficient number, since it is larger than the sum of its proper divisors (41180840451).

123542521341 is an equidigital number, since it uses as much as digits as its factorization.

123542521341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41180840450.

The product of its digits is 28800, while the sum is 33.

Adding to 123542521341 its reverse (143125245321), we get a palindrome (266667766662).

The spelling of 123542521341 in words is "one hundred twenty-three billion, five hundred forty-two million, five hundred twenty-one thousand, three hundred forty-one".