133171044 has 12 divisors (see below), whose sum is σ = 310732464. Its totient is φ = 44390344.

The previous prime is 133171037. The next prime is 133171061. The reversal of 133171044 is 440171331.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5548782 + ... + 5548805.

It is an arithmetic number, because the mean of its divisors is an integer number (25894372).

Almost surely, 2^133171044 is an apocalyptic number.

It is an amenable number.

133171044 is an abundant number, since it is smaller than the sum of its proper divisors (177561420).

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

133171044 is a wasteful number, since it uses less digits than its factorization.

133171044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11097594 (or 11097592 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 133171044 is about 11539.9759098535. The cubic root of 133171044 is about 510.6655976984.

The spelling of 133171044 in words is "one hundred thirty-three million, one hundred seventy-one thousand, forty-four".