442531122 has 48 divisors (see below), whose sum is σ = 996631776. Its totient is φ = 130820800.

The previous prime is 442531121. The next prime is 442531207. The reversal of 442531122 is 221135244.

It is a junction number, because it is equal to n+sod(n) for n = 442531092 and 442531101.

It is not an unprimeable number, because it can be changed into a prime (442531121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22333 + ... + 37199.

It is an arithmetic number, because the mean of its divisors is an integer number (20763162).

Almost surely, 2^442531122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442531122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498315888).

442531122 is an abundant number, since it is smaller than the sum of its proper divisors (554100654).

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

442531122 is a wasteful number, since it uses less digits than its factorization.

442531122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14935 (or 14924 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 442531122 is about 21036.4236979578. The cubic root of 442531122 is about 762.0461494084.

Adding to 442531122 its reverse (221135244), we get a palindrome (663666366).

The spelling of 442531122 in words is "four hundred forty-two million, five hundred thirty-one thousand, one hundred twenty-two".