42866555 has 16 divisors (see below), whose sum is σ = 52250400. Its totient is φ = 33758208.

The previous prime is 42866543. The next prime is 42866557. The reversal of 42866555 is 55566824.

It is a cyclic number.

It is not a de Polignac number, because 42866555 - 2¹⁰ = 42865531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42866557) 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, 121259 + ... + 121611.

It is an arithmetic number, because the mean of its divisors is an integer number (3265650).

Almost surely, 2^42866555 is an apocalyptic number.

42866555 is a deficient number, since it is larger than the sum of its proper divisors (9383845).

42866555 is a wasteful number, since it uses less digits than its factorization.

42866555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its digits is 288000, while the sum is 41.

The square root of 42866555 is about 6547.2555319004. The cubic root of 42866555 is about 349.9770188993.

The spelling of 42866555 in words is "forty-two million, eight hundred sixty-six thousand, five hundred fifty-five".