42555819 has 16 divisors (see below), whose sum is σ = 59484672. Its totient is φ = 27010368.

The previous prime is 42555817. The next prime is 42555833. The reversal of 42555819 is 91855524.

42555819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42555819 - 2¹ = 42555817 is a prime.

It is a super-2 number, since 2×42555819² = 3621995461521522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42555817) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14754 + ... + 17400.

It is an arithmetic number, because the mean of its divisors is an integer number (3717792).

Almost surely, 2^42555819 is an apocalyptic number.

42555819 is a deficient number, since it is larger than the sum of its proper divisors (16928853).

42555819 is a wasteful number, since it uses less digits than its factorization.

42555819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906.

The product of its digits is 72000, while the sum is 39.

The square root of 42555819 is about 6523.4821223025. The cubic root of 42555819 is about 349.1293160954.

The spelling of 42555819 in words is "forty-two million, five hundred fifty-five thousand, eight hundred nineteen".