442005312231005 has 4 divisors (see below), whose sum is σ = 530406374677212. Its totient is φ = 353604249784800.

The previous prime is 442005312230987. The next prime is 442005312231011. The reversal of 442005312231005 is 500132213500244.

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

It can be written as a sum of positive squares in 2 ways, for example, as 187003601105476 + 255001711125529 = 13674926^2 + 15968773^2 .

It is not a de Polignac number, because 442005312231005 - 2²⁶ = 442005245122141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 44200531223096 + ... + 44200531223105.

It is an arithmetic number, because the mean of its divisors is an integer number (132601593669303).

Almost surely, 2^{442005312231005} is an apocalyptic number.

It is an amenable number.

442005312231005 is a deficient number, since it is larger than the sum of its proper divisors (88401062446207).

442005312231005 is an equidigital number, since it uses as much as digits as its factorization.

442005312231005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88401062446206.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 442005312231005 its reverse (500132213500244), we get a palindrome (942137525731249).

The spelling of 442005312231005 in words is "four hundred forty-two trillion, five billion, three hundred twelve million, two hundred thirty-one thousand, five".