39742474256 has 40 divisors (see below), whose sum is σ = 78077496024. Its totient is φ = 19595233280.

The previous prime is 39742474229. The next prime is 39742474271. The reversal of 39742474256 is 65247424793.

It can be written as a sum of positive squares in 4 ways, for example, as 19088185600 + 20654288656 = 138160^2 + 143716^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39742474198 and 39742474207.

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, 300386 + ... + 411966.

Almost surely, 2^39742474256 is an apocalyptic number.

It is an amenable number.

39742474256 is a deficient number, since it is larger than the sum of its proper divisors (38335021768).

39742474256 is a wasteful number, since it uses less digits than its factorization.

39742474256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111899 (or 111893 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 53.

The spelling of 39742474256 in words is "thirty-nine billion, seven hundred forty-two million, four hundred seventy-four thousand, two hundred fifty-six".