42587449 has 4 divisors (see below), whose sum is σ = 42615936. Its totient is φ = 42558964.

The previous prime is 42587443. The next prime is 42587471. The reversal of 42587449 is 94478524.

42587449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42587449 - 2⁹ = 42586937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42587443) 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 3 ways as a sum of consecutive naturals, for example, 11869 + ... + 15034.

It is an arithmetic number, because the mean of its divisors is an integer number (10653984).

Almost surely, 2^42587449 is an apocalyptic number.

It is an amenable number.

42587449 is a deficient number, since it is larger than the sum of its proper divisors (28487).

42587449 is a wasteful number, since it uses less digits than its factorization.

42587449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28486.

The product of its digits is 322560, while the sum is 43.

The square root of 42587449 is about 6525.9059907418. The cubic root of 42587449 is about 349.2157925220.

The spelling of 42587449 in words is "forty-two million, five hundred eighty-seven thousand, four hundred forty-nine".