457540243 has 4 divisors (see below), whose sum is σ = 457588600. Its totient is φ = 457491888.

The previous prime is 457540241. The next prime is 457540247. The reversal of 457540243 is 342045754.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 457540243 - 2¹ = 457540241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 457540199 and 457540208.

It is not an unprimeable number, because it can be changed into a prime (457540241) 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, 4818 + ... + 30631.

It is an arithmetic number, because the mean of its divisors is an integer number (114397150).

Almost surely, 2^457540243 is an apocalyptic number.

457540243 is a deficient number, since it is larger than the sum of its proper divisors (48357).

457540243 is a wasteful number, since it uses less digits than its factorization.

457540243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48356.

The product of its (nonzero) digits is 67200, while the sum is 34.

The square root of 457540243 is about 21390.1903451091. The cubic root of 457540243 is about 770.5658644801.

Adding to 457540243 its reverse (342045754), we get a palindrome (799585997).

The spelling of 457540243 in words is "four hundred fifty-seven million, five hundred forty thousand, two hundred forty-three".