42133423 has 4 divisors (see below), whose sum is σ = 42151320. Its totient is φ = 42115528.

The previous prime is 42133411. The next prime is 42133439. The reversal of 42133423 is 32433124.

It is a happy number.

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 42133423 - 2¹⁷ = 42002351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42133394 and 42133403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42133453) 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, 4765 + ... + 10342.

It is an arithmetic number, because the mean of its divisors is an integer number (10537830).

Almost surely, 2^42133423 is an apocalyptic number.

42133423 is a deficient number, since it is larger than the sum of its proper divisors (17897).

42133423 is a wasteful number, since it uses less digits than its factorization.

42133423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17896.

The product of its digits is 1728, while the sum is 22.

The square root of 42133423 is about 6491.0263441154. The cubic root of 42133423 is about 347.9703562850.

Adding to 42133423 its reverse (32433124), we get a palindrome (74566547).

The spelling of 42133423 in words is "forty-two million, one hundred thirty-three thousand, four hundred twenty-three".