442333213 has 8 divisors (see below), whose sum is σ = 508744832. Its totient is φ = 376726896.

The previous prime is 442333193. The next prime is 442333223. The reversal of 442333213 is 312333244.

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

It is not a de Polignac number, because 442333213 - 2¹³ = 442325021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442333223) 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, 200145 + ... + 202342.

It is an arithmetic number, because the mean of its divisors is an integer number (63593104).

Almost surely, 2^442333213 is an apocalyptic number.

It is an amenable number.

442333213 is a deficient number, since it is larger than the sum of its proper divisors (66411619).

442333213 is a wasteful number, since it uses less digits than its factorization.

442333213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402651.

The product of its digits is 5184, while the sum is 25.

The square root of 442333213 is about 21031.7192117050. The cubic root of 442333213 is about 761.9325315767.

Adding to 442333213 its reverse (312333244), we get a palindrome (754666457).

It can be divided in two parts, 4423 and 33213, that added together give a square (37636 = 194²).

The spelling of 442333213 in words is "four hundred forty-two million, three hundred thirty-three thousand, two hundred thirteen".