133204401 has 24 divisors (see below), whose sum is σ = 222247584. Its totient is φ = 75980160.

The previous prime is 133204399. The next prime is 133204417. The reversal of 133204401 is 104402331.

It is not a de Polignac number, because 133204401 - 2¹ = 133204399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133204471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37891 + ... + 41256.

It is an arithmetic number, because the mean of its divisors is an integer number (9260316).

Almost surely, 2^133204401 is an apocalyptic number.

133204401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133204401 is a deficient number, since it is larger than the sum of its proper divisors (89043183).

133204401 is a wasteful number, since it uses less digits than its factorization.

133204401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79181 (or 79178 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 133204401 is about 11541.4210996740. The cubic root of 133204401 is about 510.7082317170.

Adding to 133204401 its reverse (104402331), we get a palindrome (237606732).

The spelling of 133204401 in words is "one hundred thirty-three million, two hundred four thousand, four hundred one".