133421343 has 8 divisors (see below), whose sum is σ = 194067456. Its totient is φ = 80861400.

The previous prime is 133421317. The next prime is 133421369. The reversal of 133421343 is 343124331.

It is an interprime number because it is at equal distance from previous prime (133421317) and next prime (133421369).

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

It is not a de Polignac number, because 133421343 - 2⁵ = 133421311 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133421383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2021503 + ... + 2021568.

It is an arithmetic number, because the mean of its divisors is an integer number (24258432).

Almost surely, 2^133421343 is an apocalyptic number.

133421343 is a deficient number, since it is larger than the sum of its proper divisors (60646113).

133421343 is a wasteful number, since it uses less digits than its factorization.

133421343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043085.

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

The square root of 133421343 is about 11550.8156854830. The cubic root of 133421343 is about 510.9853346026.

Adding to 133421343 its reverse (343124331), we get a palindrome (476545674).

The spelling of 133421343 in words is "one hundred thirty-three million, four hundred twenty-one thousand, three hundred forty-three".