42939536 has 20 divisors (see below), whose sum is σ = 85445052. Its totient is φ = 20889216.

The previous prime is 42939521. The next prime is 42939553. The reversal of 42939536 is 63593924.

It can be written as a sum of positive squares in 2 ways, for example, as 36966400 + 5973136 = 6080^2 + 2444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42939493 and 42939502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35675 + ... + 36858.

Almost surely, 2^42939536 is an apocalyptic number.

It is an amenable number.

42939536 is a deficient number, since it is larger than the sum of its proper divisors (42505516).

42939536 is a wasteful number, since it uses less digits than its factorization.

42939536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72578 (or 72572 counting only the distinct ones).

The product of its digits is 174960, while the sum is 41.

The square root of 42939536 is about 6552.8265656890. The cubic root of 42939536 is about 350.1755201277.

The spelling of 42939536 in words is "forty-two million, nine hundred thirty-nine thousand, five hundred thirty-six".