123321554243 has 8 divisors (see below), whose sum is σ = 127303721856. Its totient is φ = 119339640000.

The previous prime is 123321554231. The next prime is 123321554263. The reversal of 123321554243 is 342455123321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123321554243 - 2⁸ = 123321553987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123321554263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1752743 + ... + 1821743.

It is an arithmetic number, because the mean of its divisors is an integer number (15912965232).

Almost surely, 2^123321554243 is an apocalyptic number.

123321554243 is a deficient number, since it is larger than the sum of its proper divisors (3982167613).

123321554243 is an equidigital number, since it uses as much as digits as its factorization.

123321554243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126685.

The product of its digits is 86400, while the sum is 35.

Adding to 123321554243 its reverse (342455123321), we get a palindrome (465776677564).

The spelling of 123321554243 in words is "one hundred twenty-three billion, three hundred twenty-one million, five hundred fifty-four thousand, two hundred forty-three".