40042123204 has 12 divisors (see below), whose sum is σ = 74195699004. Its totient is φ = 18843352064.

The previous prime is 40042123169. The next prime is 40042123207. The reversal of 40042123204 is 40232124004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36901641604 + 3140481600 = 192098^2 + 56040^2 .

It is not an unprimeable number, because it can be changed into a prime (40042123207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294427309 + ... + 294427444.

It is an arithmetic number, because the mean of its divisors is an integer number (6182974917).

Almost surely, 2^40042123204 is an apocalyptic number.

It is an amenable number.

40042123204 is a deficient number, since it is larger than the sum of its proper divisors (34153575800).

40042123204 is a wasteful number, since it uses less digits than its factorization.

40042123204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588854774 (or 588854772 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 40042123204 its reverse (40232124004), we get a palindrome (80274247208).

The spelling of 40042123204 in words is "forty billion, forty-two million, one hundred twenty-three thousand, two hundred four".