40044044042 has 4 divisors (see below), whose sum is σ = 60066066066. Its totient is φ = 20022022020.

The previous prime is 40044044021. The next prime is 40044044069. The reversal of 40044044042 is 24044044004.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 35422627681 + 4621416361 = 188209^2 + 67981^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10011011009 + ... + 10011011012.

Almost surely, 2^40044044042 is an apocalyptic number.

40044044042 is a deficient number, since it is larger than the sum of its proper divisors (20022022024).

40044044042 is a wasteful number, since it uses less digits than its factorization.

40044044042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20022022023.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 40044044042 its reverse (24044044004), we get a palindrome (64088088046).

The spelling of 40044044042 in words is "forty billion, forty-four million, forty-four thousand, forty-two", and thus it is an eban number.