123024323055421 has 4 divisors (see below), whose sum is σ = 130261047941052. Its totient is φ = 115787598169792.

The previous prime is 123024323055407. The next prime is 123024323055427. The reversal of 123024323055421 is 124550323420321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69315798523321 + 53708524532100 = 8325611^2 + 7328610^2 .

It is a cyclic number.

It is not a de Polignac number, because 123024323055421 - 2²⁵ = 123024289500989 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 (123024323055427) 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, 3618362442790 + ... + 3618362442823.

It is an arithmetic number, because the mean of its divisors is an integer number (32565261985263).

Almost surely, 2^{123024323055421} is an apocalyptic number.

It is an amenable number.

123024323055421 is a deficient number, since it is larger than the sum of its proper divisors (7236724885631).

123024323055421 is an equidigital number, since it uses as much as digits as its factorization.

123024323055421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236724885630.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 123024323055421 its reverse (124550323420321), we get a palindrome (247574646475742).

The spelling of 123024323055421 in words is "one hundred twenty-three trillion, twenty-four billion, three hundred twenty-three million, fifty-five thousand, four hundred twenty-one".