442421033 has 4 divisors (see below), whose sum is σ = 449024400. Its totient is φ = 435817668.

The previous prime is 442421029. The next prime is 442421059. The reversal of 442421033 is 330124244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442421033 - 2² = 442421029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442421003) 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, 3301583 + ... + 3301716.

It is an arithmetic number, because the mean of its divisors is an integer number (112256100).

Almost surely, 2^442421033 is an apocalyptic number.

It is an amenable number.

442421033 is a deficient number, since it is larger than the sum of its proper divisors (6603367).

442421033 is an equidigital number, since it uses as much as digits as its factorization.

442421033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6603366.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 442421033 is about 21033.8069069772. The cubic root of 442421033 is about 761.9829524549.

Adding to 442421033 its reverse (330124244), we get a palindrome (772545277).

The spelling of 442421033 in words is "four hundred forty-two million, four hundred twenty-one thousand, thirty-three".