42216423 has 24 divisors (see below), whose sum is σ = 62929008. Its totient is φ = 25083648.

The previous prime is 42216407. The next prime is 42216439. The reversal of 42216423 is 32461224.

42216423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42216407) and next prime (42216439).

It is not a de Polignac number, because 42216423 - 2⁴ = 42216407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42216393 and 42216402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42216403) 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 23 ways as a sum of consecutive naturals, for example, 17265 + ... + 19557.

It is an arithmetic number, because the mean of its divisors is an integer number (2622042).

Almost surely, 2^42216423 is an apocalyptic number.

42216423 is a deficient number, since it is larger than the sum of its proper divisors (20712585).

42216423 is a wasteful number, since it uses less digits than its factorization.

42216423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2332 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 42216423 is about 6497.4166404810. The cubic root of 42216423 is about 348.1986991171.

Adding to 42216423 its reverse (32461224), we get a palindrome (74677647).

The spelling of 42216423 in words is "forty-two million, two hundred sixteen thousand, four hundred twenty-three".