442226321 has 8 divisors (see below), whose sum is σ = 468546120. Its totient is φ = 415940608.

The previous prime is 442226293. The next prime is 442226333. The reversal of 442226321 is 123622244.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 140161921 + 302064400 = 11839^2 + 17380^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442226321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442226341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21185 + ... + 36513.

It is an arithmetic number, because the mean of its divisors is an integer number (58568265).

Almost surely, 2^442226321 is an apocalyptic number.

It is an amenable number.

442226321 is a deficient number, since it is larger than the sum of its proper divisors (26319799).

442226321 is a wasteful number, since it uses less digits than its factorization.

442226321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17043.

The product of its digits is 4608, while the sum is 26.

The square root of 442226321 is about 21029.1778488842. The cubic root of 442226321 is about 761.8711517156.

Adding to 442226321 its reverse (123622244), we get a palindrome (565848565).

The spelling of 442226321 in words is "four hundred forty-two million, two hundred twenty-six thousand, three hundred twenty-one".