42587660 has 48 divisors (see below), whose sum is σ = 93562560. Its totient is φ = 16262400.

The previous prime is 42587659. The next prime is 42587681. The reversal of 42587660 is 6678524.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 58217 + ... + 58943.

It is an arithmetic number, because the mean of its divisors is an integer number (1949220).

Almost surely, 2^42587660 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 42587660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46781280).

42587660 is an abundant number, since it is smaller than the sum of its proper divisors (50974900).

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

42587660 is a wasteful number, since it uses less digits than its factorization.

42587660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 42587660 is about 6525.9221570595. The cubic root of 42587660 is about 349.2163692523.

The spelling of 42587660 in words is "forty-two million, five hundred eighty-seven thousand, six hundred sixty".