133433421 has 8 divisors (see below), whose sum is σ = 194085024. Its totient is φ = 80868720.

The previous prime is 133433411. The next prime is 133433453. The reversal of 133433421 is 124334331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133433421 - 2⁵ = 133433389 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133433391 and 133433400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133433411) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2021686 + ... + 2021751.

It is an arithmetic number, because the mean of its divisors is an integer number (24260628).

Almost surely, 2^133433421 is an apocalyptic number.

133433421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133433421 is a deficient number, since it is larger than the sum of its proper divisors (60651603).

133433421 is a wasteful number, since it uses less digits than its factorization.

133433421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043451.

The product of its digits is 2592, while the sum is 24.

The square root of 133433421 is about 11551.3384938716. The cubic root of 133433421 is about 511.0007531619. Note that the first 3 decimals are identical.

Adding to 133433421 its reverse (124334331), we get a palindrome (257767752).

The spelling of 133433421 in words is "one hundred thirty-three million, four hundred thirty-three thousand, four hundred twenty-one".