42567687 has 40 divisors (see below), whose sum is σ = 67477344. Its totient is φ = 26687232.

The previous prime is 42567667. The next prime is 42567689. The reversal of 42567687 is 78676524.

42567687 is a `hidden beast` number, since 4 + 2 + 567 + 6 + 87 = 666.

It is not a de Polignac number, because 42567687 - 2⁷ = 42567559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42567689) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 135843 + ... + 136155.

Almost surely, 2^42567687 is an apocalyptic number.

42567687 is a deficient number, since it is larger than the sum of its proper divisors (24909657).

42567687 is a wasteful number, since it uses less digits than its factorization.

42567687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 412 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 42567687 is about 6524.3916957828. The cubic root of 42567687 is about 349.1617682309.

The spelling of 42567687 in words is "forty-two million, five hundred sixty-seven thousand, six hundred eighty-seven".