442921072 has 40 divisors (see below), whose sum is σ = 940689792. Its totient is φ = 200356800.

The previous prime is 442921069. The next prime is 442921139. The reversal of 442921072 is 270129244.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 31173 + ... + 43099.

Almost surely, 2^442921072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442921072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470344896).

442921072 is an abundant number, since it is smaller than the sum of its proper divisors (497768720).

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

442921072 is a wasteful number, since it uses less digits than its factorization.

442921072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12157 (or 12151 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 442921072 is about 21045.6901051023. The cubic root of 442921072 is about 762.2699172144.

The spelling of 442921072 in words is "four hundred forty-two million, nine hundred twenty-one thousand, seventy-two".