133138835 has 8 divisors (see below), whose sum is σ = 166713120. Its totient is φ = 101880064.

The previous prime is 133138829. The next prime is 133138861. The reversal of 133138835 is 538831331.

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

It is not a de Polignac number, because 133138835 - 2⁶ = 133138771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133138795 and 133138804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578750 + ... + 578979.

It is an arithmetic number, because the mean of its divisors is an integer number (20839140).

Almost surely, 2^133138835 is an apocalyptic number.

133138835 is a deficient number, since it is larger than the sum of its proper divisors (33574285).

133138835 is a wasteful number, since it uses less digits than its factorization.

133138835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157757.

The product of its digits is 25920, while the sum is 35.

The square root of 133138835 is about 11538.5802852864. The cubic root of 133138835 is about 510.6244241971.

The spelling of 133138835 in words is "one hundred thirty-three million, one hundred thirty-eight thousand, eight hundred thirty-five".