40042915208 has 8 divisors (see below), whose sum is σ = 75080466030. Its totient is φ = 20021457600.

The previous prime is 40042915181. The next prime is 40042915243. The reversal of 40042915208 is 80251924004.

It can be written as a sum of positive squares in only one way, i.e., 38887051204 + 1155864004 = 197198^2 + 33998^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2502682193 + ... + 2502682208.

Almost surely, 2^40042915208 is an apocalyptic number.

It is an amenable number.

40042915208 is a deficient number, since it is larger than the sum of its proper divisors (35037550822).

40042915208 is a wasteful number, since it uses less digits than its factorization.

40042915208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005364407 (or 5005364403 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 40042915208 in words is "forty billion, forty-two million, nine hundred fifteen thousand, two hundred eight".