442002243 has 8 divisors (see below), whose sum is σ = 591007248. Its totient is φ = 293832704.

The previous prime is 442002163. The next prime is 442002269. The reversal of 442002243 is 342200244.

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 442002243 - 2²¹ = 439905091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442002343) 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, 207630 + ... + 209747.

It is an arithmetic number, because the mean of its divisors is an integer number (73875906).

Almost surely, 2^442002243 is an apocalyptic number.

442002243 is a deficient number, since it is larger than the sum of its proper divisors (149005005).

442002243 is a wasteful number, since it uses less digits than its factorization.

442002243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417733.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 442002243 is about 21023.8493858760. The cubic root of 442002243 is about 761.7424488331.

Adding to 442002243 its reverse (342200244), we get a palindrome (784202487).

The spelling of 442002243 in words is "four hundred forty-two million, two thousand, two hundred forty-three".