42586478 has 16 divisors (see below), whose sum is σ = 72717696. Its totient is φ = 18515640.

The previous prime is 42586463. The next prime is 42586487. The reversal of 42586478 is 87468524.

42586478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41576 + ... + 42587.

It is an arithmetic number, because the mean of its divisors is an integer number (4544856).

Almost surely, 2^42586478 is an apocalyptic number.

42586478 is a deficient number, since it is larger than the sum of its proper divisors (30131218).

42586478 is a wasteful number, since it uses less digits than its factorization.

42586478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84199.

The product of its digits is 430080, while the sum is 44.

The square root of 42586478 is about 6525.8315945173. The cubic root of 42586478 is about 349.2131384450.

The spelling of 42586478 in words is "forty-two million, five hundred eighty-six thousand, four hundred seventy-eight".