42564860 has 48 divisors (see below), whose sum is σ = 99386112. Its totient is φ = 15206400.

The previous prime is 42564859. The next prime is 42564869. The reversal of 42564860 is 6846524.

It is a self number, because there is not a number n which added to its sum of digits gives 42564860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42564869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5420 + ... + 10700.

It is an arithmetic number, because the mean of its divisors is an integer number (2070544).

Almost surely, 2^42564860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42564860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49693056).

42564860 is an abundant number, since it is smaller than the sum of its proper divisors (56821252).

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

42564860 is a wasteful number, since it uses less digits than its factorization.

42564860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334 (or 5332 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 42564860 is about 6524.1750436358. The cubic root of 42564860 is about 349.1540385636.

The spelling of 42564860 in words is "forty-two million, five hundred sixty-four thousand, eight hundred sixty".