42503481 has 16 divisors (see below), whose sum is σ = 63529920. Its totient is φ = 28082880.

The previous prime is 42503477. The next prime is 42503497. The reversal of 42503481 is 18430524.

It is not a de Polignac number, because 42503481 - 2² = 42503477 is a prime.

It is a super-2 number, since 2×42503481² = 3613091794234722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42503401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3915 + ... + 10016.

It is an arithmetic number, because the mean of its divisors is an integer number (3970620).

Almost surely, 2^42503481 is an apocalyptic number.

It is an amenable number.

42503481 is a deficient number, since it is larger than the sum of its proper divisors (21026439).

42503481 is a wasteful number, since it uses less digits than its factorization.

42503481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14053 (or 14047 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 42503481 is about 6519.4693802487. The cubic root of 42503481 is about 348.9861298308.

The spelling of 42503481 in words is "forty-two million, five hundred three thousand, four hundred eighty-one".