442404005 has 32 divisors (see below), whose sum is σ = 581520384. Its totient is φ = 321739776.

The previous prime is 442403993. The next prime is 442404013. The reversal of 442404005 is 500404244.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442404005 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 512204 + ... + 513066.

It is an arithmetic number, because the mean of its divisors is an integer number (18172512).

Almost surely, 2^442404005 is an apocalyptic number.

It is an amenable number.

442404005 is a deficient number, since it is larger than the sum of its proper divisors (139116379).

442404005 is a wasteful number, since it uses less digits than its factorization.

442404005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 442404005 is about 21033.4021261421. The cubic root of 442404005 is about 761.9731765392.

Adding to 442404005 its reverse (500404244), we get a palindrome (942808249).

The spelling of 442404005 in words is "four hundred forty-two million, four hundred four thousand, five".