123403321425453 has 4 divisors (see below), whose sum is σ = 164537761900608. Its totient is φ = 82268880950300.

The previous prime is 123403321425389. The next prime is 123403321425463. The reversal of 123403321425453 is 354524123304321.

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 123403321425453 - 2⁶ = 123403321425389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123403321425463) 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, 20567220237573 + ... + 20567220237578.

It is an arithmetic number, because the mean of its divisors is an integer number (41134440475152).

Almost surely, 2^{123403321425453} is an apocalyptic number.

It is an amenable number.

123403321425453 is a deficient number, since it is larger than the sum of its proper divisors (41134440475155).

123403321425453 is an equidigital number, since it uses as much as digits as its factorization.

123403321425453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41134440475154.

The product of its (nonzero) digits is 1036800, while the sum is 42.

Adding to 123403321425453 its reverse (354524123304321), we get a palindrome (477927444729774).

The spelling of 123403321425453 in words is "one hundred twenty-three trillion, four hundred three billion, three hundred twenty-one million, four hundred twenty-five thousand, four hundred fifty-three".