123304060421 has 4 divisors (see below), whose sum is σ = 123305010144. Its totient is φ = 123303110700.

The previous prime is 123304060367. The next prime is 123304060463. The reversal of 123304060421 is 124060403321.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 124060403321 = 45821 ⋅2707501.

It is a cyclic number.

It is not a de Polignac number, because 123304060421 - 2²⁶ = 123236951557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123304060021) 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, 242075 + ... + 552456.

It is an arithmetic number, because the mean of its divisors is an integer number (30826252536).

Almost surely, 2^123304060421 is an apocalyptic number.

It is an amenable number.

123304060421 is a deficient number, since it is larger than the sum of its proper divisors (949723).

123304060421 is an equidigital number, since it uses as much as digits as its factorization.

123304060421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949722.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 123304060421 its reverse (124060403321), we get a palindrome (247364463742).

The spelling of 123304060421 in words is "one hundred twenty-three billion, three hundred four million, sixty thousand, four hundred twenty-one".