442421130 has 32 divisors (see below), whose sum is σ = 1066464000. Its totient is φ = 117461952.

The previous prime is 442421101. The next prime is 442421143. The reversal of 442421130 is 31124244.

It is a junction number, because it is equal to n+sod(n) for n = 442421097 and 442421106.

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 15 ways as a sum of consecutive naturals, for example, 25330 + ... + 39069.

It is an arithmetic number, because the mean of its divisors is an integer number (33327000).

Almost surely, 2^442421130 is an apocalyptic number.

442421130 is an abundant number, since it is smaller than the sum of its proper divisors (624042870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442421130 is a wasteful number, since it uses less digits than its factorization.

442421130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64638.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 442421130 is about 21033.8092127888. The cubic root of 442421130 is about 761.9830081427.

Adding to 442421130 its reverse (31124244), we get a palindrome (473545374).

The spelling of 442421130 in words is "four hundred forty-two million, four hundred twenty-one thousand, one hundred thirty".