442123332 has 48 divisors (see below), whose sum is σ = 1195162752. Its totient is φ = 124588800.

The previous prime is 442123307. The next prime is 442123343. The reversal of 442123332 is 233321244.

It is a nude number because it is divisible by every one of its digits.

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 15 ways as a sum of consecutive naturals, for example, 29919 + ... + 42182.

It is an arithmetic number, because the mean of its divisors is an integer number (24899224).

Almost surely, 2^442123332 is an apocalyptic number.

442123332 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

442123332 is an abundant number, since it is smaller than the sum of its proper divisors (753039420).

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

442123332 is a wasteful number, since it uses less digits than its factorization.

442123332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72188 (or 72186 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 442123332 is about 21026.7289895504. The cubic root of 442123332 is about 761.8120036910.

Adding to 442123332 its reverse (233321244), we get a palindrome (675444576).

The spelling of 442123332 in words is "four hundred forty-two million, one hundred twenty-three thousand, three hundred thirty-two".