442700424 has 64 divisors (see below), whose sum is σ = 1249920000. Its totient is φ = 145143360.

The previous prime is 442700393. The next prime is 442700431. The reversal of 442700424 is 424007244.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 3624 + ... + 29975.

It is an arithmetic number, because the mean of its divisors is an integer number (19530000).

Almost surely, 2^442700424 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 442700424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624960000).

442700424 is an abundant number, since it is smaller than the sum of its proper divisors (807219576).

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

442700424 is a wasteful number, since it uses less digits than its factorization.

442700424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33675 (or 33665 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 442700424 is about 21040.4473336476. The cubic root of 442700424 is about 762.1433173298.

Adding to 442700424 its reverse (424007244), we get a palindrome (866707668).

The spelling of 442700424 in words is "four hundred forty-two million, seven hundred thousand, four hundred twenty-four".