442000406002 has 8 divisors (see below), whose sum is σ = 663047077212. Its totient is φ = 220984713600.

The previous prime is 442000405993. The next prime is 442000406009. The reversal of 442000406002 is 200604000244.

It can be written as a sum of positive squares in 2 ways, for example, as 283406104881 + 158594301121 = 532359^2 + 398239^2 .

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

It is not an unprimeable number, because it can be changed into a prime (442000406009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7708999 + ... + 7766122.

Almost surely, 2^442000406002 is an apocalyptic number.

442000406002 is a deficient number, since it is larger than the sum of its proper divisors (221046671210).

442000406002 is a wasteful number, since it uses less digits than its factorization.

442000406002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15489404.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 442000406002 its reverse (200604000244), we get a palindrome (642604406246).

The spelling of 442000406002 in words is "four hundred forty-two billion, four hundred six thousand, two".