442661200243 has 4 divisors (see below), whose sum is σ = 461907339408. Its totient is φ = 423415061080.

The previous prime is 442661200229. The next prime is 442661200253. The reversal of 442661200243 is 342002166244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442661200243 - 2²⁹ = 442124329331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442661200199 and 442661200208.

It is not an unprimeable number, because it can be changed into a prime (442661200253) 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 3 ways as a sum of consecutive naturals, for example, 9623069548 + ... + 9623069593.

It is an arithmetic number, because the mean of its divisors is an integer number (115476834852).

Almost surely, 2^442661200243 is an apocalyptic number.

442661200243 is a deficient number, since it is larger than the sum of its proper divisors (19246139165).

442661200243 is a wasteful number, since it uses less digits than its factorization.

442661200243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19246139164.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 442661200243 its reverse (342002166244), we get a palindrome (784663366487).

The spelling of 442661200243 in words is "four hundred forty-two billion, six hundred sixty-one million, two hundred thousand, two hundred forty-three".