133421719 has 2 divisors, whose sum is σ = 133421720. Its totient is φ = 133421718.

The previous prime is 133421683. The next prime is 133421731. The reversal of 133421719 is 917124331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133421719 - 2⁹ = 133421207 is a prime.

It is a super-2 number, since 2×133421719² = 35602710201829922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133421789) 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, 66710859 + 66710860.

It is an arithmetic number, because the mean of its divisors is an integer number (66710860).

Almost surely, 2^133421719 is an apocalyptic number.

133421719 is a deficient number, since it is larger than the sum of its proper divisors (1).

133421719 is an equidigital number, since it uses as much as digits as its factorization.

133421719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 133421719 is about 11550.8319613784. The cubic root of 133421719 is about 510.9858146115.

The spelling of 133421719 in words is "one hundred thirty-three million, four hundred twenty-one thousand, seven hundred nineteen".