442123130 has 8 divisors (see below), whose sum is σ = 795821652. Its totient is φ = 176849248.

The previous prime is 442123127. The next prime is 442123139. The reversal of 442123130 is 31321244.

It can be written as a sum of positive squares in 2 ways, for example, as 437269921 + 4853209 = 20911^2 + 2203^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442123139) 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, 22106147 + ... + 22106166.

Almost surely, 2^442123130 is an apocalyptic number.

442123130 is a deficient number, since it is larger than the sum of its proper divisors (353698522).

442123130 is a wasteful number, since it uses less digits than its factorization.

442123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44212320.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 442123130 is about 21026.7241861399. The cubic root of 442123130 is about 761.8118876705.

Adding to 442123130 its reverse (31321244), we get a palindrome (473444374).

The spelling of 442123130 in words is "four hundred forty-two million, one hundred twenty-three thousand, one hundred thirty".