442423003 has 4 divisors (see below), whose sum is σ = 482643288. Its totient is φ = 402202720.

The previous prime is 442422983. The next prime is 442423013. The reversal of 442423003 is 300324244.

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 442423003 - 2¹⁷ = 442291931 is a prime.

It is a super-2 number, since 2×442423003² = 391476227167076018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442423013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20110126 + ... + 20110147.

It is an arithmetic number, because the mean of its divisors is an integer number (120660822).

Almost surely, 2^442423003 is an apocalyptic number.

442423003 is a deficient number, since it is larger than the sum of its proper divisors (40220285).

442423003 is a wasteful number, since it uses less digits than its factorization.

442423003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40220284.

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

The square root of 442423003 is about 21033.8537362985. The cubic root of 442423003 is about 761.9840834320.

Adding to 442423003 its reverse (300324244), we get a palindrome (742747247).

The spelling of 442423003 in words is "four hundred forty-two million, four hundred twenty-three thousand, three".