42066555 has 8 divisors (see below), whose sum is σ = 67306512. Its totient is φ = 22435488.

The previous prime is 42066527. The next prime is 42066569. The reversal of 42066555 is 55566024.

It is a happy number.

42066555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42066555 - 2⁵ = 42066523 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402204 + ... + 1402233.

It is an arithmetic number, because the mean of its divisors is an integer number (8413314).

Almost surely, 2^42066555 is an apocalyptic number.

42066555 is a deficient number, since it is larger than the sum of its proper divisors (25239957).

42066555 is a wasteful number, since it uses less digits than its factorization.

42066555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804445.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 42066555 is about 6485.8734955286. The cubic root of 42066555 is about 347.7861762823.

The spelling of 42066555 in words is "forty-two million, sixty-six thousand, five hundred fifty-five".