136729123 has 2 divisors, whose sum is σ = 136729124. Its totient is φ = 136729122.

The previous prime is 136729093. The next prime is 136729133. The reversal of 136729123 is 321927631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136729123 - 2⁵ = 136729091 is a prime.

It is not a weakly prime, because it can be changed into another prime (136729133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68364561 + 68364562.

It is an arithmetic number, because the mean of its divisors is an integer number (68364562).

Almost surely, 2^136729123 is an apocalyptic number.

136729123 is a deficient number, since it is larger than the sum of its proper divisors (1).

136729123 is an equidigital number, since it uses as much as digits as its factorization.

136729123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 34.

The square root of 136729123 is about 11693.1228933934. The cubic root of 136729123 is about 515.1736907462.

The spelling of 136729123 in words is "one hundred thirty-six million, seven hundred twenty-nine thousand, one hundred twenty-three".