42078536 has 64 divisors (see below), whose sum is σ = 88646400. Its totient is φ = 18629632.

The previous prime is 42078527. The next prime is 42078541. The reversal of 42078536 is 63587024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42078496 and 42078505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185255 + ... + 185481.

It is an arithmetic number, because the mean of its divisors is an integer number (1385100).

Almost surely, 2^42078536 is an apocalyptic number.

It is an amenable number.

42078536 is an abundant number, since it is smaller than the sum of its proper divisors (46567864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42078536 is a wasteful number, since it uses less digits than its factorization.

42078536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 42078536 is about 6486.7970524751. The cubic root of 42078536 is about 347.8191908760.

The spelling of 42078536 in words is "forty-two million, seventy-eight thousand, five hundred thirty-six".