42445047 has 8 divisors (see below), whose sum is σ = 57368944. Its totient is φ = 27908928.

The previous prime is 42445033. The next prime is 42445049. The reversal of 42445047 is 74054424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42445047 - 2⁸ = 42444791 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 (42445049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96688 + ... + 97125.

It is an arithmetic number, because the mean of its divisors is an integer number (7171118).

Almost surely, 2^42445047 is an apocalyptic number.

42445047 is a deficient number, since it is larger than the sum of its proper divisors (14923897).

42445047 is a wasteful number, since it uses less digits than its factorization.

42445047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193889.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 42445047 is about 6514.9863392029. The cubic root of 42445047 is about 348.8261271873.

The spelling of 42445047 in words is "forty-two million, four hundred forty-five thousand, forty-seven".