42524009 has 4 divisors (see below), whose sum is σ = 46389840. Its totient is φ = 38658180.

The previous prime is 42524003. The next prime is 42524017. The reversal of 42524009 is 90042524.

42524009 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 not a de Polignac number, because 42524009 - 2⁴ = 42523993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42524003) 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, 1932899 + ... + 1932920.

It is an arithmetic number, because the mean of its divisors is an integer number (11597460).

Almost surely, 2^42524009 is an apocalyptic number.

It is an amenable number.

42524009 is a deficient number, since it is larger than the sum of its proper divisors (3865831).

42524009 is a wasteful number, since it uses less digits than its factorization.

42524009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865830.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42524009 is about 6521.0435514571. The cubic root of 42524009 is about 349.0423043220.

The spelling of 42524009 in words is "forty-two million, five hundred twenty-four thousand, nine".