133456423 has 2 divisors, whose sum is σ = 133456424. Its totient is φ = 133456422.

The previous prime is 133456397. The next prime is 133456441. The reversal of 133456423 is 324654331.

It is a strong prime.

It is an emirp because it is prime and its reverse (324654331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133456423 - 2¹⁷ = 133325351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133456223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66728211 + 66728212.

It is an arithmetic number, because the mean of its divisors is an integer number (66728212).

Almost surely, 2^133456423 is an apocalyptic number.

133456423 is a deficient number, since it is larger than the sum of its proper divisors (1).

133456423 is an equidigital number, since it uses as much as digits as its factorization.

133456423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 31.

The square root of 133456423 is about 11552.3340931606. The cubic root of 133456423 is about 511.0301145315.

The spelling of 133456423 in words is "one hundred thirty-three million, four hundred fifty-six thousand, four hundred twenty-three".