442129 has 8 divisors (see below), whose sum is σ = 472320. Its totient is φ = 412896.

The previous prime is 442121. The next prime is 442139. The reversal of 442129 is 921244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442129 - 2³ = 442121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442121) 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 in 7 ways as a sum of consecutive naturals, for example, 877 + ... + 1285.

It is an arithmetic number, because the mean of its divisors is an integer number (59040).

2⁴⁴²¹²⁹ is an apocalyptic number.

It is an amenable number.

442129 is a deficient number, since it is larger than the sum of its proper divisors (30191).

442129 is a wasteful number, since it uses less digits than its factorization.

442129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its digits is 576, while the sum is 22.

The square root of 442129 is about 664.9278156311. The cubic root of 442129 is about 76.1815259142.

The spelling of 442129 in words is "four hundred forty-two thousand, one hundred twenty-nine".