442031256636387 has 8 divisors (see below), whose sum is σ = 642954555107520. Its totient is φ = 267897731294760.

The previous prime is 442031256636353. The next prime is 442031256636467. The reversal of 442031256636387 is 783636652130244.

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

It is not a de Polignac number, because 442031256636387 - 2¹⁶ = 442031256570851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442031256636387.

It is not an unprimeable number, because it can be changed into a prime (442031256636287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6697443282337 + ... + 6697443282402.

It is an arithmetic number, because the mean of its divisors is an integer number (80369319388440).

Almost surely, 2^{442031256636387} is an apocalyptic number.

442031256636387 is a deficient number, since it is larger than the sum of its proper divisors (200923298471133).

442031256636387 is a wasteful number, since it uses less digits than its factorization.

442031256636387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13394886564753.

The product of its (nonzero) digits is 104509440, while the sum is 60.

The spelling of 442031256636387 in words is "four hundred forty-two trillion, thirty-one billion, two hundred fifty-six million, six hundred thirty-six thousand, three hundred eighty-seven".