133872005 has 16 divisors (see below), whose sum is σ = 169413120. Its totient is φ = 101274048.

The previous prime is 133871989. The next prime is 133872041. The reversal of 133872005 is 500278331.

It is a cyclic number.

It is not a de Polignac number, because 133872005 - 2⁴ = 133871989 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 72524 + ... + 74346.

It is an arithmetic number, because the mean of its divisors is an integer number (10588320).

Almost surely, 2^133872005 is an apocalyptic number.

It is an amenable number.

133872005 is a deficient number, since it is larger than the sum of its proper divisors (35541115).

133872005 is a wasteful number, since it uses less digits than its factorization.

133872005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 133872005 is about 11570.3070400055. The cubic root of 133872005 is about 511.5600124772.

The spelling of 133872005 in words is "one hundred thirty-three million, eight hundred seventy-two thousand, five".