133239429 has 12 divisors (see below), whose sum is σ = 192557196. Its totient is φ = 88780032.

The previous prime is 133239409. The next prime is 133239443. The reversal of 133239429 is 924932331.

It can be written as a sum of positive squares in 2 ways, for example, as 18792225 + 114447204 = 4335^2 + 10698^2 .

It is not a de Polignac number, because 133239429 - 2⁸ = 133239173 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 133239393 and 133239402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133239409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30507 + ... + 34599.

It is an arithmetic number, because the mean of its divisors is an integer number (16046433).

Almost surely, 2^133239429 is an apocalyptic number.

It is an amenable number.

133239429 is a deficient number, since it is larger than the sum of its proper divisors (59317767).

133239429 is a wasteful number, since it uses less digits than its factorization.

133239429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7716 (or 7713 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 133239429 is about 11542.9384906964. The cubic root of 133239429 is about 510.7529938018.

The spelling of 133239429 in words is "one hundred thirty-three million, two hundred thirty-nine thousand, four hundred twenty-nine".