442003430 has 32 divisors (see below), whose sum is σ = 870041088. Its totient is φ = 160338400.

The previous prime is 442003427. The next prime is 442003481. The reversal of 442003430 is 34300244.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 42749 + ... + 52071.

It is an arithmetic number, because the mean of its divisors is an integer number (27188784).

Almost surely, 2^442003430 is an apocalyptic number.

442003430 is a deficient number, since it is larger than the sum of its proper divisors (428037658).

442003430 is a wasteful number, since it uses less digits than its factorization.

442003430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9772.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 442003430 is about 21023.8776157016. The cubic root of 442003430 is about 761.7431307207.

Adding to 442003430 its reverse (34300244), we get a palindrome (476303674).

The spelling of 442003430 in words is "four hundred forty-two million, three thousand, four hundred thirty".