457042 has 4 divisors (see below), whose sum is σ = 685566. Its totient is φ = 228520.

The previous prime is 457021. The next prime is 457043. The reversal of 457042 is 240754.

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

It can be written as a sum of positive squares in only one way, i.e., 335241 + 121801 = 579^2 + 349^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (457043) 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 as a sum of consecutive naturals, namely, 114259 + ... + 114262.

2⁴⁵⁷⁰⁴² is an apocalyptic number.

457042 is a deficient number, since it is larger than the sum of its proper divisors (228524).

457042 is a wasteful number, since it uses less digits than its factorization.

457042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228523.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 457042 is about 676.0488148056. The cubic root of 457042 is about 77.0286057768.

Adding to 457042 its reverse (240754), we get a palindrome (697796).

The spelling of 457042 in words is "four hundred fifty-seven thousand, forty-two".