43240444042 has 4 divisors (see below), whose sum is σ = 64860666066. Its totient is φ = 21620222020.

The previous prime is 43240444021. The next prime is 43240444063. The reversal of 43240444042 is 24044404234.

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

It is an interprime number because it is at equal distance from previous prime (43240444021) and next prime (43240444063).

It can be written as a sum of positive squares in only one way, i.e., 31640938641 + 11599505401 = 177879^2 + 107701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43240443995 and 43240444013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10810111009 + ... + 10810111012.

Almost surely, 2^43240444042 is an apocalyptic number.

43240444042 is a deficient number, since it is larger than the sum of its proper divisors (21620222024).

43240444042 is a wasteful number, since it uses less digits than its factorization.

43240444042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21620222023.

The product of its (nonzero) digits is 49152, while the sum is 31.

Adding to 43240444042 its reverse (24044404234), we get a palindrome (67284848276).

The spelling of 43240444042 in words is "forty-three billion, two hundred forty million, four hundred forty-four thousand, forty-two".