442340203 has 4 divisors (see below), whose sum is σ = 446398480. Its totient is φ = 438281928.

The previous prime is 442340191. The next prime is 442340237. The reversal of 442340203 is 302043244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442340203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442340303) 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 3 ways as a sum of consecutive naturals, for example, 2028975 + ... + 2029192.

It is an arithmetic number, because the mean of its divisors is an integer number (111599620).

Almost surely, 2^442340203 is an apocalyptic number.

442340203 is a deficient number, since it is larger than the sum of its proper divisors (4058277).

442340203 is a wasteful number, since it uses less digits than its factorization.

442340203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4058276.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 442340203 is about 21031.8853886189. The cubic root of 442340203 is about 761.9365450520.

Adding to 442340203 its reverse (302043244), we get a palindrome (744383447).

The spelling of 442340203 in words is "four hundred forty-two million, three hundred forty thousand, two hundred three".