40442044042 has 16 divisors (see below), whose sum is σ = 60906248712. Its totient is φ = 20140070400.

The previous prime is 40442044037. The next prime is 40442044067. The reversal of 40442044042 is 24044024404.

It can be written as a sum of positive squares in 4 ways, for example, as 10457312121 + 29984731921 = 102261^2 + 173161^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40442044042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734878 + ... + 787990.

Almost surely, 2^40442044042 is an apocalyptic number.

40442044042 is a deficient number, since it is larger than the sum of its proper divisors (20464204670).

40442044042 is a wasteful number, since it uses less digits than its factorization.

40442044042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54633.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40442044042 its reverse (24044024404), we get a palindrome (64486068446).

The spelling of 40442044042 in words is "forty billion, four hundred forty-two million, forty-four thousand, forty-two".