133230129 has 4 divisors (see below), whose sum is σ = 177640176. Its totient is φ = 88820084.

The previous prime is 133230121. The next prime is 133230131. The reversal of 133230129 is 921032331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133230129 - 2³ = 133230121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133230099 and 133230108.

It is not an unprimeable number, because it can be changed into a prime (133230121) 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, 22205019 + ... + 22205024.

It is an arithmetic number, because the mean of its divisors is an integer number (44410044).

Almost surely, 2^133230129 is an apocalyptic number.

It is an amenable number.

133230129 is a deficient number, since it is larger than the sum of its proper divisors (44410047).

133230129 is an equidigital number, since it uses as much as digits as its factorization.

133230129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44410046.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 133230129 is about 11542.5356399710. The cubic root of 133230129 is about 510.7411101490.

The spelling of 133230129 in words is "one hundred thirty-three million, two hundred thirty thousand, one hundred twenty-nine".