442122552 has 96 divisors (see below), whose sum is σ = 1276704000. Its totient is φ = 137816640.

The previous prime is 442122539. The next prime is 442122563. The reversal of 442122552 is 255221244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106027 + ... + 110117.

It is an arithmetic number, because the mean of its divisors is an integer number (13299000).

Almost surely, 2^442122552 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 442122552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (638352000).

442122552 is an abundant number, since it is smaller than the sum of its proper divisors (834581448).

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

442122552 is a wasteful number, since it uses less digits than its factorization.

442122552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201 (or 4194 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 442122552 is about 21026.7104417215. The cubic root of 442122552 is about 761.8115556910.

Adding to 442122552 its reverse (255221244), we get a palindrome (697343796).

It can be divided in two parts, 44212 and 2552, that added together give a palindrome (46764).

The spelling of 442122552 in words is "four hundred forty-two million, one hundred twenty-two thousand, five hundred fifty-two".