133000401 has 24 divisors (see below), whose sum is σ = 189652320. Its totient is φ = 82888192.

The previous prime is 133000381. The next prime is 133000403. The reversal of 133000401 is 104000331.

It is not a de Polignac number, because 133000401 - 2¹¹ = 132998353 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133000403) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 154765 + ... + 155621.

It is an arithmetic number, because the mean of its divisors is an integer number (7902180).

Almost surely, 2^133000401 is an apocalyptic number.

It is an amenable number.

133000401 is a deficient number, since it is larger than the sum of its proper divisors (56651919).

133000401 is a wasteful number, since it uses less digits than its factorization.

133000401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 133000401 is about 11532.5799802126. The cubic root of 133000401 is about 510.4473852051.

Adding to 133000401 its reverse (104000331), we get a palindrome (237000732).

The spelling of 133000401 in words is "one hundred thirty-three million, four hundred one", and thus it is an aban number.