442332032243 has 4 divisors (see below), whose sum is σ = 442334194008. Its totient is φ = 442329870480.

The previous prime is 442332032237. The next prime is 442332032297. The reversal of 442332032243 is 342230233244.

It is a happy number.

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 442332032243 - 2¹⁸ = 442331770099 is a prime.

It is a super-2 number, since 2×442332032243² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442332032743) 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, 737621 + ... + 1195302.

It is an arithmetic number, because the mean of its divisors is an integer number (110583548502).

Almost surely, 2^442332032243 is an apocalyptic number.

442332032243 is a deficient number, since it is larger than the sum of its proper divisors (2161765).

442332032243 is a wasteful number, since it uses less digits than its factorization.

442332032243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161764.

The product of its (nonzero) digits is 82944, while the sum is 32.

Adding to 442332032243 its reverse (342230233244), we get a palindrome (784562265487).

The spelling of 442332032243 in words is "four hundred forty-two billion, three hundred thirty-two million, thirty-two thousand, two hundred forty-three".