133506424 has 16 divisors (see below), whose sum is σ = 250461000. Its totient is φ = 66716832.

The previous prime is 133506409. The next prime is 133506433. The reversal of 133506424 is 424605331.

It is a junction number, because it is equal to n+sod(n) for n = 133506392 and 133506401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17119 + ... + 23665.

Almost surely, 2^133506424 is an apocalyptic number.

It is an amenable number.

133506424 is a deficient number, since it is larger than the sum of its proper divisors (116954576).

133506424 is a wasteful number, since it uses less digits than its factorization.

133506424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9102 (or 9098 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 133506424 is about 11554.4979986151. The cubic root of 133506424 is about 511.0939276867.

The spelling of 133506424 in words is "one hundred thirty-three million, five hundred six thousand, four hundred twenty-four".