442305163 has 4 divisors (see below), whose sum is σ = 444401608. Its totient is φ = 440208720.

The previous prime is 442305119. The next prime is 442305173. The reversal of 442305163 is 361503244.

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

It is a cyclic number.

It is not a de Polignac number, because 442305163 - 2²⁵ = 408750731 is a prime.

It is a super-3 number, since 3×442305163³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442305173) 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, 1047906 + ... + 1048327.

It is an arithmetic number, because the mean of its divisors is an integer number (111100402).

Almost surely, 2^442305163 is an apocalyptic number.

442305163 is a deficient number, since it is larger than the sum of its proper divisors (2096445).

442305163 is a wasteful number, since it uses less digits than its factorization.

442305163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096444.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 442305163 is about 21031.0523512258. The cubic root of 442305163 is about 761.9164255744.

The spelling of 442305163 in words is "four hundred forty-two million, three hundred five thousand, one hundred sixty-three".