42168323 has 4 divisors (see below), whose sum is σ = 42541608. Its totient is φ = 41795040.

The previous prime is 42168317. The next prime is 42168331. The reversal of 42168323 is 32386124.

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

It is a cyclic number.

It is not a de Polignac number, because 42168323 - 2⁴ = 42168307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42165323) 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, 186473 + ... + 186698.

It is an arithmetic number, because the mean of its divisors is an integer number (10635402).

Almost surely, 2^42168323 is an apocalyptic number.

42168323 is a deficient number, since it is larger than the sum of its proper divisors (373285).

42168323 is a wasteful number, since it uses less digits than its factorization.

42168323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373284.

The product of its digits is 6912, while the sum is 29.

The square root of 42168323 is about 6493.7141144341. The cubic root of 42168323 is about 348.0664068234.

The spelling of 42168323 in words is "forty-two million, one hundred sixty-eight thousand, three hundred twenty-three".