133423434 has 36 divisors (see below), whose sum is σ = 305114706. Its totient is φ = 42131664.

The previous prime is 133423417. The next prime is 133423439. The reversal of 133423434 is 434324331.

It can be written as a sum of positive squares in only one way, i.e., 104101209 + 29322225 = 10203^2 + 5415^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133423398 and 133423407.

It is not an unprimeable number, because it can be changed into a prime (133423439) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3769 + ... + 16764.

Almost surely, 2^133423434 is an apocalyptic number.

133423434 is an abundant number, since it is smaller than the sum of its proper divisors (171691272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133423434 is a wasteful number, since it uses less digits than its factorization.

133423434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20579 (or 20557 counting only the distinct ones).

The product of its digits is 10368, while the sum is 27.

The square root of 133423434 is about 11550.9061982167. The cubic root of 133423434 is about 510.9880040025.

Adding to 133423434 its reverse (434324331), we get a palindrome (567747765).

The spelling of 133423434 in words is "one hundred thirty-three million, four hundred twenty-three thousand, four hundred thirty-four".