123340453 has 4 divisors (see below), whose sum is σ = 123439680. Its totient is φ = 123241228.

The previous prime is 123340411. The next prime is 123340471. The reversal of 123340453 is 354043321.

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 123340453 - 2⁹ = 123339941 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 (123340753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47725 + ... + 50242.

It is an arithmetic number, because the mean of its divisors is an integer number (30859920).

Almost surely, 2^123340453 is an apocalyptic number.

It is an amenable number.

123340453 is a deficient number, since it is larger than the sum of its proper divisors (99227).

123340453 is an equidigital number, since it uses as much as digits as its factorization.

123340453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99226.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 123340453 is about 11105.8747066586. The cubic root of 123340453 is about 497.7774054529. Note that the first 3 decimals are identical.

Adding to 123340453 its reverse (354043321), we get a palindrome (477383774).

The spelling of 123340453 in words is "one hundred twenty-three million, three hundred forty thousand, four hundred fifty-three".