135769423 has 2 divisors, whose sum is σ = 135769424. Its totient is φ = 135769422.

The previous prime is 135769393. The next prime is 135769433. The reversal of 135769423 is 324967531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135769423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135769433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67884711 + 67884712.

It is an arithmetic number, because the mean of its divisors is an integer number (67884712).

Almost surely, 2^135769423 is an apocalyptic number.

135769423 is a deficient number, since it is larger than the sum of its proper divisors (1).

135769423 is an equidigital number, since it uses as much as digits as its factorization.

135769423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 40.

The square root of 135769423 is about 11652.0136886291. The cubic root of 135769423 is about 513.9655270677.

The spelling of 135769423 in words is "one hundred thirty-five million, seven hundred sixty-nine thousand, four hundred twenty-three".