133142989 has 8 divisors (see below), whose sum is σ = 153586368. Its totient is φ = 113055360.

The previous prime is 133142981. The next prime is 133143011. The reversal of 133142989 is 989241331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133142989 - 2³ = 133142981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133142981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88132 + ... + 89629.

It is an arithmetic number, because the mean of its divisors is an integer number (19198296).

Almost surely, 2^133142989 is an apocalyptic number.

It is an amenable number.

133142989 is a deficient number, since it is larger than the sum of its proper divisors (20443379).

133142989 is a wasteful number, since it uses less digits than its factorization.

133142989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177875.

The product of its digits is 46656, while the sum is 40.

The square root of 133142989 is about 11538.7602886965. The cubic root of 133142989 is about 510.6297347233.

The spelling of 133142989 in words is "one hundred thirty-three million, one hundred forty-two thousand, nine hundred eighty-nine".