133430239 has 2 divisors, whose sum is σ = 133430240. Its totient is φ = 133430238.

The previous prime is 133430221. The next prime is 133430243. The reversal of 133430239 is 932034331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133430239 - 2⁷ = 133430111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133430639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66715119 + 66715120.

It is an arithmetic number, because the mean of its divisors is an integer number (66715120).

Almost surely, 2^133430239 is an apocalyptic number.

133430239 is a deficient number, since it is larger than the sum of its proper divisors (1).

133430239 is an equidigital number, since it uses as much as digits as its factorization.

133430239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 133430239 is about 11551.2007600942. The cubic root of 133430239 is about 510.9966911677.

The spelling of 133430239 in words is "one hundred thirty-three million, four hundred thirty thousand, two hundred thirty-nine".