133420423 has 2 divisors, whose sum is σ = 133420424. Its totient is φ = 133420422.

The previous prime is 133420393. The next prime is 133420433. The reversal of 133420423 is 324024331.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (324024331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133420423 - 2¹³ = 133412231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133420394 and 133420403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133420433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66710211 + 66710212.

It is an arithmetic number, because the mean of its divisors is an integer number (66710212).

Almost surely, 2^133420423 is an apocalyptic number.

133420423 is a deficient number, since it is larger than the sum of its proper divisors (1).

133420423 is an equidigital number, since it uses as much as digits as its factorization.

133420423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 133420423 is about 11550.7758613870. The cubic root of 133420423 is about 510.9841601089.

Adding to 133420423 its reverse (324024331), we get a palindrome (457444754).

The spelling of 133420423 in words is "one hundred thirty-three million, four hundred twenty thousand, four hundred twenty-three".