42163447 has 4 divisors (see below), whose sum is σ = 42344640. Its totient is φ = 41982256.

The previous prime is 42163423. The next prime is 42163463. The reversal of 42163447 is 74436124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42163447 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 (42163487) 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, 90247 + ... + 90712.

It is an arithmetic number, because the mean of its divisors is an integer number (10586160).

Almost surely, 2^42163447 is an apocalyptic number.

42163447 is a deficient number, since it is larger than the sum of its proper divisors (181193).

42163447 is a wasteful number, since it uses less digits than its factorization.

42163447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181192.

The product of its digits is 16128, while the sum is 31.

The square root of 42163447 is about 6493.3386635844. The cubic root of 42163447 is about 348.0529904553.

The spelling of 42163447 in words is "forty-two million, one hundred sixty-three thousand, four hundred forty-seven".