133671441 has 12 divisors (see below), whose sum is σ = 188104272. Its totient is φ = 84423384.

The previous prime is 133671413. The next prime is 133671481. The reversal of 133671441 is 144176331.

It is not a de Polignac number, because 133671441 - 2⁵ = 133671409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133671399 and 133671408.

It is not an unprimeable number, because it can be changed into a prime (133671481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60631 + ... + 62796.

It is an arithmetic number, because the mean of its divisors is an integer number (15675356).

Almost surely, 2^133671441 is an apocalyptic number.

It is an amenable number.

133671441 is a deficient number, since it is larger than the sum of its proper divisors (54432831).

133671441 is a wasteful number, since it uses less digits than its factorization.

133671441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123468 (or 123449 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 133671441 is about 11561.6366056022. The cubic root of 133671441 is about 511.3044155908.

The spelling of 133671441 in words is "one hundred thirty-three million, six hundred seventy-one thousand, four hundred forty-one".