133330424 has 8 divisors (see below), whose sum is σ = 249994560. Its totient is φ = 66665208.

The previous prime is 133330423. The next prime is 133330451. The reversal of 133330424 is 424033331.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 133330424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133330423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8333144 + ... + 8333159.

It is an arithmetic number, because the mean of its divisors is an integer number (31249320).

Almost surely, 2^133330424 is an apocalyptic number.

It is an amenable number.

133330424 is a deficient number, since it is larger than the sum of its proper divisors (116664136).

133330424 is a wasteful number, since it uses less digits than its factorization.

133330424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16666309 (or 16666305 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 133330424 is about 11546.8794052766. The cubic root of 133330424 is about 510.8692391527.

Adding to 133330424 its reverse (424033331), we get a palindrome (557363755).

The spelling of 133330424 in words is "one hundred thirty-three million, three hundred thirty thousand, four hundred twenty-four".