42248439 has 16 divisors (see below), whose sum is σ = 62872800. Its totient is φ = 28038528.

The previous prime is 42248399. The next prime is 42248449. The reversal of 42248439 is 93484224.

42248439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42248439 - 2⁸ = 42248183 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42248449) 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 15 ways as a sum of consecutive naturals, for example, 2767 + ... + 9599.

It is an arithmetic number, because the mean of its divisors is an integer number (3929550).

Almost surely, 2^42248439 is an apocalyptic number.

42248439 is a deficient number, since it is larger than the sum of its proper divisors (20624361).

42248439 is a wasteful number, since it uses less digits than its factorization.

42248439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7071 (or 7065 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 42248439 is about 6499.8799219678. The cubic root of 42248439 is about 348.2866989351.

The spelling of 42248439 in words is "forty-two million, two hundred forty-eight thousand, four hundred thirty-nine".