442434220 has 48 divisors (see below), whose sum is σ = 951501600. Its totient is φ = 172753920.

The previous prime is 442434203. The next prime is 442434229. The reversal of 442434220 is 22434244.

It is not an unprimeable number, because it can be changed into a prime (442434229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168276 + ... + 170884.

It is an arithmetic number, because the mean of its divisors is an integer number (19822950).

Almost surely, 2^442434220 is an apocalyptic number.

It is an amenable number.

442434220 is an abundant number, since it is smaller than the sum of its proper divisors (509067380).

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

442434220 is a wasteful number, since it uses less digits than its factorization.

442434220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818 (or 2816 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 442434220 is about 21034.1203761888. The cubic root of 442434220 is about 761.9905230484.

Adding to 442434220 its reverse (22434244), we get a palindrome (464868464).

The spelling of 442434220 in words is "four hundred forty-two million, four hundred thirty-four thousand, two hundred twenty".