442378505873243 has 8 divisors (see below), whose sum is σ = 445309782949536. Its totient is φ = 439447250088000.

The previous prime is 442378505873233. The next prime is 442378505873387. The reversal of 442378505873243 is 342378505873244.

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 442378505873243 - 2¹² = 442378505869147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442378505873243.

It is not an unprimeable number, because it can be changed into a prime (442378505873233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37508333 + ... + 47870993.

It is an arithmetic number, because the mean of its divisors is an integer number (55663722868692).

Almost surely, 2^{442378505873243} is an apocalyptic number.

442378505873243 is a deficient number, since it is larger than the sum of its proper divisors (2931277076293).

442378505873243 is a wasteful number, since it uses less digits than its factorization.

442378505873243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10645525.

The product of its (nonzero) digits is 541900800, while the sum is 65.

Subtracting from 442378505873243 its reverse (342378505873244), we obtain a palindrome (99999999999999).

The spelling of 442378505873243 in words is "four hundred forty-two trillion, three hundred seventy-eight billion, five hundred five million, eight hundred seventy-three thousand, two hundred forty-three".