133424423 has 4 divisors (see below), whose sum is σ = 145553928. Its totient is φ = 121294920.

The previous prime is 133424419. The next prime is 133424461. The reversal of 133424423 is 324424331.

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 133424423 - 2² = 133424419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133424392 and 133424401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133424323) 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, 6064736 + ... + 6064757.

It is an arithmetic number, because the mean of its divisors is an integer number (36388482).

Almost surely, 2^133424423 is an apocalyptic number.

133424423 is a deficient number, since it is larger than the sum of its proper divisors (12129505).

133424423 is a wasteful number, since it uses less digits than its factorization.

133424423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12129504.

The product of its digits is 6912, while the sum is 26.

The square root of 133424423 is about 11550.9490086313. The cubic root of 133424423 is about 510.9892665640.

Adding to 133424423 its reverse (324424331), we get a palindrome (457848754).

The spelling of 133424423 in words is "one hundred thirty-three million, four hundred twenty-four thousand, four hundred twenty-three".