453423121 has 4 divisors (see below), whose sum is σ = 453637044. Its totient is φ = 453209200.

The previous prime is 453423119. The next prime is 453423151. The reversal of 453423121 is 121324354.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121324354 = 2 ⋅60662177.

It can be written as a sum of positive squares in 2 ways, for example, as 317374225 + 136048896 = 17815^2 + 11664^2 .

It is a cyclic number.

It is not a de Polignac number, because 453423121 - 2¹ = 453423119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (453423101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103750 + ... + 108031.

It is an arithmetic number, because the mean of its divisors is an integer number (113409261).

Almost surely, 2^453423121 is an apocalyptic number.

It is an amenable number.

453423121 is a deficient number, since it is larger than the sum of its proper divisors (213923).

453423121 is a wasteful number, since it uses less digits than its factorization.

453423121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213922.

The product of its digits is 2880, while the sum is 25.

The square root of 453423121 is about 21293.7343131730. The cubic root of 453423121 is about 768.2476149491.

Adding to 453423121 its reverse (121324354), we get a palindrome (574747475).

The spelling of 453423121 in words is "four hundred fifty-three million, four hundred twenty-three thousand, one hundred twenty-one".