136230421 has 2 divisors, whose sum is σ = 136230422. Its totient is φ = 136230420.

The previous prime is 136230383. The next prime is 136230439. The reversal of 136230421 is 124032631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122988100 + 13242321 = 11090^2 + 3639^2 .

It is a cyclic number.

It is not a de Polignac number, because 136230421 - 2⁷ = 136230293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136230392 and 136230401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136230491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68115210 + 68115211.

It is an arithmetic number, because the mean of its divisors is an integer number (68115211).

Almost surely, 2^136230421 is an apocalyptic number.

It is an amenable number.

136230421 is a deficient number, since it is larger than the sum of its proper divisors (1).

136230421 is an equidigital number, since it uses as much as digits as its factorization.

136230421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 136230421 is about 11671.7788275824. The cubic root of 136230421 is about 514.5465843003.

The spelling of 136230421 in words is "one hundred thirty-six million, two hundred thirty thousand, four hundred twenty-one".