133129506 has 8 divisors (see below), whose sum is σ = 266259024. Its totient is φ = 44376500.

The previous prime is 133129489. The next prime is 133129519. The reversal of 133129506 is 605921331.

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

133129506 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11094120 + ... + 11094131.

It is an arithmetic number, because the mean of its divisors is an integer number (33282378).

Almost surely, 2^133129506 is an apocalyptic number.

133129506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133129506 is a wasteful number, since it uses less digits than its factorization.

133129506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22188256.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 133129506 is about 11538.1760256983. The cubic root of 133129506 is about 510.6124974829.

The spelling of 133129506 in words is "one hundred thirty-three million, one hundred twenty-nine thousand, five hundred six".