42536447 has 4 divisors (see below), whose sum is σ = 42555456. Its totient is φ = 42517440.

The previous prime is 42536441. The next prime is 42536467. The reversal of 42536447 is 74463524.

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 42536447 - 2⁸ = 42536191 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 (42536441) 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, 5618 + ... + 10799.

It is an arithmetic number, because the mean of its divisors is an integer number (10638864).

Almost surely, 2^42536447 is an apocalyptic number.

42536447 is a deficient number, since it is larger than the sum of its proper divisors (19009).

42536447 is a wasteful number, since it uses less digits than its factorization.

42536447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19008.

The product of its digits is 80640, while the sum is 35.

The square root of 42536447 is about 6521.9971634462. The cubic root of 42536447 is about 349.0763318833.

The spelling of 42536447 in words is "forty-two million, five hundred thirty-six thousand, four hundred forty-seven".