442870555 has 4 divisors (see below), whose sum is σ = 531444672. Its totient is φ = 354296440.

The previous prime is 442870499. The next prime is 442870559. The reversal of 442870555 is 555078244.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 442870555 - 2¹¹ = 442868507 is a prime.

It is a super-2 number, since 2×442870555² = 392268656972016050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442870559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44287051 + ... + 44287060.

It is an arithmetic number, because the mean of its divisors is an integer number (132861168).

Almost surely, 2^442870555 is an apocalyptic number.

442870555 is a deficient number, since it is larger than the sum of its proper divisors (88574117).

442870555 is an equidigital number, since it uses as much as digits as its factorization.

442870555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88574116.

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 442870555 is about 21044.4898964076. The cubic root of 442870555 is about 762.2409360889.

The spelling of 442870555 in words is "four hundred forty-two million, eight hundred seventy thousand, five hundred fifty-five".