442213303 has 4 divisors (see below), whose sum is σ = 505386640. Its totient is φ = 379039968.

The previous prime is 442213297. The next prime is 442213313. The reversal of 442213303 is 303312244.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 442213303 - 2¹⁷ = 442082231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442213313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31586658 + ... + 31586671.

It is an arithmetic number, because the mean of its divisors is an integer number (126346660).

Almost surely, 2^442213303 is an apocalyptic number.

442213303 is a deficient number, since it is larger than the sum of its proper divisors (63173337).

442213303 is an equidigital number, since it uses as much as digits as its factorization.

442213303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63173336.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 442213303 is about 21028.8683242822. The cubic root of 442213303 is about 761.8636758030.

Adding to 442213303 its reverse (303312244), we get a palindrome (745525547).

It can be divided in two parts, 44221 and 3303, that added together give a square (47524 = 218²).

The spelling of 442213303 in words is "four hundred forty-two million, two hundred thirteen thousand, three hundred three".