42656806 has 8 divisors (see below), whose sum is σ = 66049344. Its totient is φ = 20640360.

The previous prime is 42656773. The next prime is 42656827. The reversal of 42656806 is 60865624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 343945 + ... + 344068.

It is an arithmetic number, because the mean of its divisors is an integer number (8256168).

Almost surely, 2^42656806 is an apocalyptic number.

42656806 is a deficient number, since it is larger than the sum of its proper divisors (23392538).

42656806 is a wasteful number, since it uses less digits than its factorization.

42656806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688046.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 42656806 is about 6531.2178037484. The cubic root of 42656806 is about 349.4052648025.

The spelling of 42656806 in words is "forty-two million, six hundred fifty-six thousand, eight hundred six".