133239642 has 32 divisors (see below), whose sum is σ = 288168192. Its totient is φ = 40909824.

The previous prime is 133239611. The next prime is 133239653. The reversal of 133239642 is 246932331.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9103 + ... + 18690.

It is an arithmetic number, because the mean of its divisors is an integer number (9005256).

Almost surely, 2^133239642 is an apocalyptic number.

133239642 is an abundant number, since it is smaller than the sum of its proper divisors (154928550).

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

133239642 is a wasteful number, since it uses less digits than its factorization.

133239642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27862.

The product of its digits is 23328, while the sum is 33.

The square root of 133239642 is about 11542.9477171128. The cubic root of 133239642 is about 510.7532659693.

The spelling of 133239642 in words is "one hundred thirty-three million, two hundred thirty-nine thousand, six hundred forty-two".