133421705 has 8 divisors (see below), whose sum is σ = 168532800. Its totient is φ = 101119536.

The previous prime is 133421683. The next prime is 133421719. The reversal of 133421705 is 507124331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133421705 is a prime.

It is a nialpdrome in base 15.

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, 702125 + ... + 702314.

It is an arithmetic number, because the mean of its divisors is an integer number (21066600).

Almost surely, 2^133421705 is an apocalyptic number.

It is an amenable number.

133421705 is a deficient number, since it is larger than the sum of its proper divisors (35111095).

133421705 is a wasteful number, since it uses less digits than its factorization.

133421705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404463.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 133421705 is about 11550.8313553614. The cubic root of 133421705 is about 510.9857967389.

The spelling of 133421705 in words is "one hundred thirty-three million, four hundred twenty-one thousand, seven hundred five".