442134013243 has 4 divisors (see below), whose sum is σ = 476144321968. Its totient is φ = 408123704520.

The previous prime is 442134013231. The next prime is 442134013247. The reversal of 442134013243 is 342310431244.

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 442134013243 - 2¹³ = 442134005051 is a prime.

It is a super-2 number, since 2×442134013243² (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 (442134013247) 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, 17005154343 + ... + 17005154368.

It is an arithmetic number, because the mean of its divisors is an integer number (119036080492).

Almost surely, 2^442134013243 is an apocalyptic number.

442134013243 is a deficient number, since it is larger than the sum of its proper divisors (34010308725).

442134013243 is a wasteful number, since it uses less digits than its factorization.

442134013243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34010308724.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 442134013243 its reverse (342310431244), we get a palindrome (784444444487).

The spelling of 442134013243 in words is "four hundred forty-two billion, one hundred thirty-four million, thirteen thousand, two hundred forty-three".