42016423 has 16 divisors (see below), whose sum is σ = 45581760. Its totient is φ = 38624256.

The previous prime is 42016421. The next prime is 42016433. The reversal of 42016423 is 32461024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42016423 - 2¹ = 42016421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42016394 and 42016403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42016421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82293 + ... + 82801.

It is an arithmetic number, because the mean of its divisors is an integer number (2848860).

Almost surely, 2^42016423 is an apocalyptic number.

42016423 is a deficient number, since it is larger than the sum of its proper divisors (3565337).

42016423 is a wasteful number, since it uses less digits than its factorization.

42016423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 42016423 is about 6482.0076365274. The cubic root of 42016423 is about 347.6479655572.

Adding to 42016423 its reverse (32461024), we get a palindrome (74477447).

The spelling of 42016423 in words is "forty-two million, sixteen thousand, four hundred twenty-three".