136445429 has 2 divisors, whose sum is σ = 136445430. Its totient is φ = 136445428.

The previous prime is 136445411. The next prime is 136445431. The reversal of 136445429 is 924544631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117722500 + 18722929 = 10850^2 + 4327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136445429 is a prime.

Together with 136445431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136445392 and 136445401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136445129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68222714 + 68222715.

It is an arithmetic number, because the mean of its divisors is an integer number (68222715).

Almost surely, 2^136445429 is an apocalyptic number.

It is an amenable number.

136445429 is a deficient number, since it is larger than the sum of its proper divisors (1).

136445429 is an equidigital number, since it uses as much as digits as its factorization.

136445429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 136445429 is about 11680.9857888793. The cubic root of 136445429 is about 514.8171393400.

The spelling of 136445429 in words is "one hundred thirty-six million, four hundred forty-five thousand, four hundred twenty-nine".