42155563 has 12 divisors (see below), whose sum is σ = 45067600. Its totient is φ = 39422592.

The previous prime is 42155551. The next prime is 42155579. The reversal of 42155563 is 36555124.

42155563 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 42155563 - 2¹⁷ = 42024491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42155513) 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 11 ways as a sum of consecutive naturals, for example, 57145 + ... + 57877.

Almost surely, 2^42155563 is an apocalyptic number.

42155563 is a deficient number, since it is larger than the sum of its proper divisors (2912037).

42155563 is a wasteful number, since it uses less digits than its factorization.

42155563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 949 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

The square root of 42155563 is about 6492.7315515120. The cubic root of 42155563 is about 348.0312953535.

The spelling of 42155563 in words is "forty-two million, one hundred fifty-five thousand, five hundred sixty-three".