42556503 has 16 divisors (see below), whose sum is σ = 62168832. Its totient is φ = 25680000.

The previous prime is 42556499. The next prime is 42556567. The reversal of 42556503 is 30565524.

42556503 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 42556503 - 2² = 42556499 is a prime.

It is a super-2 number, since 2×42556503² = 3622111895178018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42556603) 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, 5278 + ... + 10628.

It is an arithmetic number, because the mean of its divisors is an integer number (3885552).

Almost surely, 2^42556503 is an apocalyptic number.

42556503 is a deficient number, since it is larger than the sum of its proper divisors (19612329).

42556503 is a wasteful number, since it uses less digits than its factorization.

42556503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5606.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 42556503 is about 6523.5345480805. The cubic root of 42556503 is about 349.1311866048.

The spelling of 42556503 in words is "forty-two million, five hundred fifty-six thousand, five hundred three".