455421243 has 4 divisors (see below), whose sum is σ = 607228328. Its totient is φ = 303614160.

The previous prime is 455421233. The next prime is 455421257. The reversal of 455421243 is 342124554.

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

It is not a de Polignac number, because 455421243 - 2⁹ = 455420731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 455421243.

It is not an unprimeable number, because it can be changed into a prime (455421223) 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, 75903538 + ... + 75903543.

It is an arithmetic number, because the mean of its divisors is an integer number (151807082).

Almost surely, 2^455421243 is an apocalyptic number.

455421243 is a deficient number, since it is larger than the sum of its proper divisors (151807085).

455421243 is a wasteful number, since it uses less digits than its factorization.

455421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151807084.

The product of its digits is 19200, while the sum is 30.

The square root of 455421243 is about 21340.6008115985. The cubic root of 455421243 is about 769.3744528704.

Adding to 455421243 its reverse (342124554), we get a palindrome (797545797).

The spelling of 455421243 in words is "four hundred fifty-five million, four hundred twenty-one thousand, two hundred forty-three".