442130042 has 16 divisors (see below), whose sum is σ = 679715520. Its totient is φ = 215574912.

The previous prime is 442130023. The next prime is 442130069. The reversal of 442130042 is 240031244.

It is a junction number, because it is equal to n+sod(n) for n = 442129996 and 442130023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54059 + ... + 61697.

It is an arithmetic number, because the mean of its divisors is an integer number (42482220).

Almost surely, 2^442130042 is an apocalyptic number.

442130042 is a deficient number, since it is larger than the sum of its proper divisors (237585478).

442130042 is a wasteful number, since it uses less digits than its factorization.

442130042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8357.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 442130042 is about 21026.8885477619. Note that the first 3 decimals coincide. The cubic root of 442130042 is about 761.8158576176.

Adding to 442130042 its reverse (240031244), we get a palindrome (682161286).

The spelling of 442130042 in words is "four hundred forty-two million, one hundred thirty thousand, forty-two".