42449503 has 4 divisors (see below), whose sum is σ = 42720040. Its totient is φ = 42178968.

The previous prime is 42449443. The next prime is 42449521. The reversal of 42449503 is 30594424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42449503 - 2¹⁷ = 42318431 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 (42449543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135033 + ... + 135346.

It is an arithmetic number, because the mean of its divisors is an integer number (10680010).

Almost surely, 2^42449503 is an apocalyptic number.

42449503 is a deficient number, since it is larger than the sum of its proper divisors (270537).

42449503 is a wasteful number, since it uses less digits than its factorization.

42449503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270536.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 42449503 is about 6515.3283109909. The cubic root of 42449503 is about 348.8383336750.

The spelling of 42449503 in words is "forty-two million, four hundred forty-nine thousand, five hundred three".