133240444 has 12 divisors (see below), whose sum is σ = 234190600. Its totient is φ = 66328848.

The previous prime is 133240439. The next prime is 133240453. The reversal of 133240444 is 444042331.

133240444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 71814 + ... + 73645.

Almost surely, 2^133240444 is an apocalyptic number.

It is an amenable number.

133240444 is a deficient number, since it is larger than the sum of its proper divisors (100950156).

133240444 is a wasteful number, since it uses less digits than its factorization.

133240444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145692 (or 145690 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 133240444 is about 11542.9824568870. The cubic root of 133240444 is about 510.7542907477.

Adding to 133240444 its reverse (444042331), we get a palindrome (577282775).

The spelling of 133240444 in words is "one hundred thirty-three million, two hundred forty thousand, four hundred forty-four".