442131112 has 8 divisors (see below), whose sum is σ = 828995850. Its totient is φ = 221065552.

The previous prime is 442131103. The next prime is 442131113. The reversal of 442131112 is 211131244.

It can be written as a sum of positive squares in only one way, i.e., 228795876 + 213335236 = 15126^2 + 14606^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 442131112.

It is not an unprimeable number, because it can be changed into a prime (442131113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27633187 + ... + 27633202.

Almost surely, 2^442131112 is an apocalyptic number.

It is an amenable number.

442131112 is a deficient number, since it is larger than the sum of its proper divisors (386864738).

442131112 is a wasteful number, since it uses less digits than its factorization.

442131112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55266395 (or 55266391 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 442131112 is about 21026.9139913588. The cubic root of 442131112 is about 761.8164721746.

Adding to 442131112 its reverse (211131244), we get a palindrome (653262356).

The spelling of 442131112 in words is "four hundred forty-two million, one hundred thirty-one thousand, one hundred twelve".