42086660 has 48 divisors (see below), whose sum is σ = 110194560. Its totient is φ = 13117440.

The previous prime is 42086633. The next prime is 42086669. The reversal of 42086660 is 6668024.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42086669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12125 + ... + 15204.

It is an arithmetic number, because the mean of its divisors is an integer number (2295720).

Almost surely, 2^42086660 is an apocalyptic number.

It is an amenable number.

42086660 is an abundant number, since it is smaller than the sum of its proper divisors (68107900).

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

42086660 is a wasteful number, since it uses less digits than its factorization.

42086660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27356 (or 27354 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 42086660 is about 6487.4232172720. The cubic root of 42086660 is about 347.8415736356.

The spelling of 42086660 in words is "forty-two million, eighty-six thousand, six hundred sixty".