442143234 has 24 divisors (see below), whose sum is σ = 1031668092. Its totient is φ = 136044000.

The previous prime is 442143223. The next prime is 442143253. The reversal of 442143234 is 432341244.

It is a happy number.

442143234 is a `hidden beast` number, since 4 + 421 + 4 + 3 + 234 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 390260025 + 51883209 = 19755^2 + 7203^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442143198 and 442143207.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 944517 + ... + 944984.

Almost surely, 2^442143234 is an apocalyptic number.

442143234 is an abundant number, since it is smaller than the sum of its proper divisors (589524858).

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

442143234 is a wasteful number, since it uses less digits than its factorization.

442143234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889522 (or 1889519 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 442143234 is about 21027.2022390046. The cubic root of 442143234 is about 761.8234344042.

Adding to 442143234 its reverse (432341244), we get a palindrome (874484478).

The spelling of 442143234 in words is "four hundred forty-two million, one hundred forty-three thousand, two hundred thirty-four".