42478223 has 8 divisors (see below), whose sum is σ = 45118800. Its totient is φ = 39853440.

The previous prime is 42478213. The next prime is 42478229. The reversal of 42478223 is 32287424.

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

It is not a de Polignac number, because 42478223 - 2¹² = 42474127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42478223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42478229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853 + ... + 9401.

It is an arithmetic number, because the mean of its divisors is an integer number (5639850).

Almost surely, 2^42478223 is an apocalyptic number.

42478223 is a deficient number, since it is larger than the sum of its proper divisors (2640577).

42478223 is a wasteful number, since it uses less digits than its factorization.

42478223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7897.

The product of its digits is 21504, while the sum is 32.

The square root of 42478223 is about 6517.5319715365. The cubic root of 42478223 is about 348.9169869583.

The spelling of 42478223 in words is "forty-two million, four hundred seventy-eight thousand, two hundred twenty-three".