442420005 has 16 divisors (see below), whose sum is σ = 709571520. Its totient is φ = 235390848.

The previous prime is 442419983. The next prime is 442420009. The reversal of 442420005 is 500024244.

It is not a de Polignac number, because 442420005 - 2¹⁹ = 441895717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442420009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28912 + ... + 41481.

It is an arithmetic number, because the mean of its divisors is an integer number (44348220).

Almost surely, 2^442420005 is an apocalyptic number.

It is an amenable number.

442420005 is a deficient number, since it is larger than the sum of its proper divisors (267151515).

442420005 is a wasteful number, since it uses less digits than its factorization.

442420005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70820.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 442420005 is about 21033.7824701122. The cubic root of 442420005 is about 761.9823622787.

Adding to 442420005 its reverse (500024244), we get a palindrome (942444249).

The spelling of 442420005 in words is "four hundred forty-two million, four hundred twenty thousand, five".