442136306443 has 8 divisors (see below), whose sum is σ = 479572310000. Its totient is φ = 405189662688.

The previous prime is 442136306377. The next prime is 442136306483. The reversal of 442136306443 is 344603631244.

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 442136306443 - 2⁹ = 442136305931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442136306396 and 442136306405.

It is not an unprimeable number, because it can be changed into a prime (442136306483) 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, 122338068 + ... + 122341681.

It is an arithmetic number, because the mean of its divisors is an integer number (59946538750).

Almost surely, 2^442136306443 is an apocalyptic number.

442136306443 is a deficient number, since it is larger than the sum of its proper divisors (37436003557).

442136306443 is a wasteful number, since it uses less digits than its factorization.

442136306443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244679901.

The product of its (nonzero) digits is 497664, while the sum is 40.

Adding to 442136306443 its reverse (344603631244), we get a palindrome (786739937687).

The spelling of 442136306443 in words is "four hundred forty-two billion, one hundred thirty-six million, three hundred six thousand, four hundred forty-three".