133500123 has 16 divisors (see below), whose sum is σ = 198576000. Its totient is φ = 88641000.

The previous prime is 133500091. The next prime is 133500139. The reversal of 133500123 is 321005331.

It is not a de Polignac number, because 133500123 - 2⁵ = 133500091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133500096 and 133500105.

It is not an unprimeable number, because it can be changed into a prime (133500173) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3073 + ... + 16626.

It is an arithmetic number, because the mean of its divisors is an integer number (12411000).

Almost surely, 2^133500123 is an apocalyptic number.

133500123 is a deficient number, since it is larger than the sum of its proper divisors (65075877).

133500123 is a wasteful number, since it uses less digits than its factorization.

133500123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19959 (or 19953 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 133500123 is about 11554.2253310207. The cubic root of 133500123 is about 511.0858869912.

Adding to 133500123 its reverse (321005331), we get a palindrome (454505454).

The spelling of 133500123 in words is "one hundred thirty-three million, five hundred thousand, one hundred twenty-three".