42636786 has 16 divisors (see below), whose sum is σ = 88214400. Its totient is φ = 13722128.

The previous prime is 42636719. The next prime is 42636791. The reversal of 42636786 is 68763624.

42636786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 122346 + ... + 122693.

It is an arithmetic number, because the mean of its divisors is an integer number (5513400).

Almost surely, 2^42636786 is an apocalyptic number.

42636786 is an abundant number, since it is smaller than the sum of its proper divisors (45577614).

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

42636786 is a wasteful number, since it uses less digits than its factorization.

42636786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245073.

The product of its digits is 290304, while the sum is 42.

The square root of 42636786 is about 6529.6849847447. The cubic root of 42636786 is about 349.3505944488.

The spelling of 42636786 in words is "forty-two million, six hundred thirty-six thousand, seven hundred eighty-six".