43442042011 has 4 divisors (see below), whose sum is σ = 43442649000. Its totient is φ = 43441435024.

The previous prime is 43442042009. The next prime is 43442042027. The reversal of 43442042011 is 11024024434.

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 43442042011 - 2¹ = 43442042009 is a prime.

It is a super-2 number, since 2×43442042011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43442042071) 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, 179161 + ... + 344938.

It is an arithmetic number, because the mean of its divisors is an integer number (10860662250).

Almost surely, 2^43442042011 is an apocalyptic number.

43442042011 is a deficient number, since it is larger than the sum of its proper divisors (606989).

43442042011 is an equidigital number, since it uses as much as digits as its factorization.

43442042011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606988.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 43442042011 its reverse (11024024434), we get a palindrome (54466066445).

The spelling of 43442042011 in words is "forty-three billion, four hundred forty-two million, forty-two thousand, eleven".