457287442 has 4 divisors (see below), whose sum is σ = 685931166. Its totient is φ = 228643720.

The previous prime is 457287433. The next prime is 457287443. The reversal of 457287442 is 244782754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244782754 = 2 ⋅122391377.

It can be written as a sum of positive squares in only one way, i.e., 338891281 + 118396161 = 18409^2 + 10881^2 .

It is a super-2 number, since 2×457287442² = 418223609221806728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (457287443) 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 as a sum of consecutive naturals, namely, 114321859 + ... + 114321862.

Almost surely, 2^457287442 is an apocalyptic number.

457287442 is a deficient number, since it is larger than the sum of its proper divisors (228643724).

457287442 is a wasteful number, since it uses less digits than its factorization.

457287442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228643723.

The product of its digits is 501760, while the sum is 43.

The square root of 457287442 is about 21384.2802544299. The cubic root of 457287442 is about 770.4239201651.

The spelling of 457287442 in words is "four hundred fifty-seven million, two hundred eighty-seven thousand, four hundred forty-two".