133043413421 has 2 divisors, whose sum is σ = 133043413422. Its totient is φ = 133043413420.

The previous prime is 133043413387. The next prime is 133043413427. The reversal of 133043413421 is 124314340331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107183557321 + 25859856100 = 327389^2 + 160810^2 .

It is a cyclic number.

It is not a de Polignac number, because 133043413421 - 2¹⁸ = 133043151277 is a prime.

It is a super-2 number, since 2×133043413421² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133043413427) 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 as a sum of consecutive naturals, namely, 66521706710 + 66521706711.

It is an arithmetic number, because the mean of its divisors is an integer number (66521706711).

Almost surely, 2^133043413421 is an apocalyptic number.

It is an amenable number.

133043413421 is a deficient number, since it is larger than the sum of its proper divisors (1).

133043413421 is an equidigital number, since it uses as much as digits as its factorization.

133043413421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 133043413421 its reverse (124314340331), we get a palindrome (257357753752).

The spelling of 133043413421 in words is "one hundred thirty-three billion, forty-three million, four hundred thirteen thousand, four hundred twenty-one".