133240412 has 12 divisors (see below), whose sum is σ = 235480056. Its totient is φ = 65960400.

The previous prime is 133240411. The next prime is 133240427. The reversal of 133240412 is 214042331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133240411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164498 + ... + 165305.

It is an arithmetic number, because the mean of its divisors is an integer number (19623338).

Almost surely, 2^133240412 is an apocalyptic number.

It is an amenable number.

133240412 is a deficient number, since it is larger than the sum of its proper divisors (102239644).

133240412 is a wasteful number, since it uses less digits than its factorization.

133240412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329908 (or 329906 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 133240412 is about 11542.9810707633. The cubic root of 133240412 is about 510.7542498588.

Adding to 133240412 its reverse (214042331), we get a palindrome (347282743).

The spelling of 133240412 in words is "one hundred thirty-three million, two hundred forty thousand, four hundred twelve".