442405001 has 8 divisors (see below), whose sum is σ = 451036608. Its totient is φ = 433818000.

The previous prime is 442404997. The next prime is 442405003. The reversal of 442405001 is 100504244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442405001 - 2² = 442404997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442405003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9236 + ... + 31146.

It is an arithmetic number, because the mean of its divisors is an integer number (56379576).

Almost surely, 2^442405001 is an apocalyptic number.

It is an amenable number.

442405001 is a deficient number, since it is larger than the sum of its proper divisors (8631607).

442405001 is a wasteful number, since it uses less digits than its factorization.

442405001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22303.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 442405001 is about 21033.4258027550. The cubic root of 442405001 is about 761.9737483579.

Adding to 442405001 its reverse (100504244), we get a palindrome (542909245).

The spelling of 442405001 in words is "four hundred forty-two million, four hundred five thousand, one".