133242023 has 2 divisors, whose sum is σ = 133242024. Its totient is φ = 133242022.

The previous prime is 133242019. The next prime is 133242077. The reversal of 133242023 is 320242331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133242023 - 2² = 133242019 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 133241986 and 133242004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133242223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66621011 + 66621012.

It is an arithmetic number, because the mean of its divisors is an integer number (66621012).

Almost surely, 2^133242023 is an apocalyptic number.

133242023 is a deficient number, since it is larger than the sum of its proper divisors (1).

133242023 is an equidigital number, since it uses as much as digits as its factorization.

133242023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 133242023 is about 11543.0508532190. The cubic root of 133242023 is about 510.7563083479.

Adding to 133242023 its reverse (320242331), we get a palindrome (453484354).

The spelling of 133242023 in words is "one hundred thirty-three million, two hundred forty-two thousand, twenty-three".