442430457 has 24 divisors (see below), whose sum is σ = 726588576. Its totient is φ = 237944448.

The previous prime is 442430431. The next prime is 442430473. The reversal of 442430457 is 754034244.

It is not a de Polignac number, because 442430457 - 2⁶ = 442430393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442430957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86023 + ... + 91020.

It is an arithmetic number, because the mean of its divisors is an integer number (30274524).

Almost surely, 2^442430457 is an apocalyptic number.

It is an amenable number.

442430457 is a deficient number, since it is larger than the sum of its proper divisors (284158119).

442430457 is a wasteful number, since it uses less digits than its factorization.

442430457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177077 (or 177070 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 33.

The square root of 442430457 is about 21034.0309260969. The cubic root of 442430457 is about 761.9883627434.

The spelling of 442430457 in words is "four hundred forty-two million, four hundred thirty thousand, four hundred fifty-seven".