442100424 has 96 divisors (see below), whose sum is σ = 1170028800. Its totient is φ = 139059840.

The previous prime is 442100381. The next prime is 442100441. The reversal of 442100424 is 424001244.

It is a self number, because there is not a number n which added to its sum of digits gives 442100424.

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, 1643362 + ... + 1643630.

It is an arithmetic number, because the mean of its divisors is an integer number (12187800).

Almost surely, 2^442100424 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 442100424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585014400).

442100424 is an abundant number, since it is smaller than the sum of its proper divisors (727928376).

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

442100424 is a wasteful number, since it uses less digits than its factorization.

442100424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 442100424 is about 21026.1842472665. The cubic root of 442100424 is about 761.7988460571.

Adding to 442100424 its reverse (424001244), we get a palindrome (866101668).

The spelling of 442100424 in words is "four hundred forty-two million, one hundred thousand, four hundred twenty-four".