442303243 has 2 divisors, whose sum is σ = 442303244. Its totient is φ = 442303242.

The previous prime is 442303241. The next prime is 442303249. The reversal of 442303243 is 342303244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442303243 - 2¹ = 442303241 is a prime.

Together with 442303241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (442303241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221151621 + 221151622.

It is an arithmetic number, because the mean of its divisors is an integer number (221151622).

Almost surely, 2^442303243 is an apocalyptic number.

442303243 is a deficient number, since it is larger than the sum of its proper divisors (1).

442303243 is an equidigital number, since it uses as much as digits as its factorization.

442303243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 442303243 is about 21031.0067043877. The cubic root of 442303243 is about 761.9153231065.

Adding to 442303243 its reverse (342303244), we get a palindrome (784606487).

Subtracting from 442303243 its reverse (342303244), we obtain a palindrome (99999999).

The spelling of 442303243 in words is "four hundred forty-two million, three hundred three thousand, two hundred forty-three".