42564642 has 32 divisors (see below), whose sum is σ = 88470144. Its totient is φ = 13641600.

The previous prime is 42564611. The next prime is 42564659. The reversal of 42564642 is 24646524.

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 15 ways as a sum of consecutive naturals, for example, 16248 + ... + 18684.

It is an arithmetic number, because the mean of its divisors is an integer number (2764692).

Almost surely, 2^42564642 is an apocalyptic number.

42564642 is an abundant number, since it is smaller than the sum of its proper divisors (45905502).

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

42564642 is a wasteful number, since it uses less digits than its factorization.

42564642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554.

The product of its digits is 46080, while the sum is 33.

The square root of 42564642 is about 6524.1583365213. The cubic root of 42564642 is about 349.1534424873.

The spelling of 42564642 in words is "forty-two million, five hundred sixty-four thousand, six hundred forty-two".