133430424 has 32 divisors (see below), whose sum is σ = 339048240. Its totient is φ = 43747200.

The previous prime is 133430389. The next prime is 133430449. The reversal of 133430424 is 424034331.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 133430394 and 133430403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44107 + ... + 47034.

Almost surely, 2^133430424 is an apocalyptic number.

It is an amenable number.

133430424 is an abundant number, since it is smaller than the sum of its proper divisors (205617816).

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

133430424 is a wasteful number, since it uses less digits than its factorization.

133430424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91211 (or 91207 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 133430424 is about 11551.2087679169. The cubic root of 133430424 is about 510.9969273319.

Adding to 133430424 its reverse (424034331), we get a palindrome (557464755).

The spelling of 133430424 in words is "one hundred thirty-three million, four hundred thirty thousand, four hundred twenty-four".