133135138 has 8 divisors (see below), whose sum is σ = 204347088. Its totient is φ = 65019444.

The previous prime is 133135133. The next prime is 133135157. The reversal of 133135138 is 831531331.

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

It is not an unprimeable number, because it can be changed into a prime (133135133) 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, 773956 + ... + 774127.

It is an arithmetic number, because the mean of its divisors is an integer number (25543386).

Almost surely, 2^133135138 is an apocalyptic number.

133135138 is a deficient number, since it is larger than the sum of its proper divisors (71211950).

133135138 is a wasteful number, since it uses less digits than its factorization.

133135138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548128.

The product of its digits is 3240, while the sum is 28.

The square root of 133135138 is about 11538.4200824896. The cubic root of 133135138 is about 510.6196978126.

Adding to 133135138 its reverse (831531331), we get a palindrome (964666469).

The spelling of 133135138 in words is "one hundred thirty-three million, one hundred thirty-five thousand, one hundred thirty-eight".