442022213 has 8 divisors (see below), whose sum is σ = 469406400. Its totient is φ = 415050048.

The previous prime is 442022209. The next prime is 442022233. The reversal of 442022213 is 312220244.

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

It is a cyclic number.

It is not a de Polignac number, because 442022213 - 2² = 442022209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442022233) 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, 100793 + ... + 105086.

It is an arithmetic number, because the mean of its divisors is an integer number (58675800).

Almost surely, 2^442022213 is an apocalyptic number.

It is an amenable number.

442022213 is a deficient number, since it is larger than the sum of its proper divisors (27384187).

442022213 is a wasteful number, since it uses less digits than its factorization.

442022213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206011.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 442022213 is about 21024.3243173235. The cubic root of 442022213 is about 761.7539206962.

Adding to 442022213 its reverse (312220244), we get a palindrome (754242457).

The spelling of 442022213 in words is "four hundred forty-two million, twenty-two thousand, two hundred thirteen".