42004503 has 12 divisors (see below), whose sum is σ = 60948160. Its totient is φ = 27876096.

The previous prime is 42004493. The next prime is 42004517. The reversal of 42004503 is 30540024.

It is a happy number.

It is not a de Polignac number, because 42004503 - 2⁵ = 42004471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8458 + ... + 12471.

Almost surely, 2^42004503 is an apocalyptic number.

42004503 is a deficient number, since it is larger than the sum of its proper divisors (18943657).

42004503 is a wasteful number, since it uses less digits than its factorization.

42004503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21158 (or 21155 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 42004503 is about 6481.0881030889. The cubic root of 42004503 is about 347.6150867018.

Adding to 42004503 its reverse (30540024), we get a palindrome (72544527).

The spelling of 42004503 in words is "forty-two million, four thousand, five hundred three".