442343220 has 48 divisors (see below), whose sum is σ = 1351159488. Its totient is φ = 107234560.

The previous prime is 442343207. The next prime is 442343227. The reversal of 442343220 is 22343244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442343227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334449 + ... + 335768.

It is an arithmetic number, because the mean of its divisors is an integer number (28149156).

Almost surely, 2^442343220 is an apocalyptic number.

It is an amenable number.

442343220 is an abundant number, since it is smaller than the sum of its proper divisors (908816268).

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

442343220 is a wasteful number, since it uses less digits than its factorization.

442343220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670240 (or 670238 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 442343220 is about 21031.9571129270. The cubic root of 442343220 is about 761.9382773216.

Adding to 442343220 its sum of digits (24), we get a palindrome (442343244).

Adding to 442343220 its reverse (22343244), we get a palindrome (464686464).

The spelling of 442343220 in words is "four hundred forty-two million, three hundred forty-three thousand, two hundred twenty".