136520029 has 2 divisors, whose sum is σ = 136520030. Its totient is φ = 136520028.

The previous prime is 136520017. The next prime is 136520053. The reversal of 136520029 is 920025631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90212004 + 46308025 = 9498^2 + 6805^2 .

It is a cyclic number.

It is not a de Polignac number, because 136520029 - 2¹⁷ = 136388957 is a prime.

It is a super-5 number, since 5×136520029⁵ (a number of 42 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136519979 and 136520006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136520099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68260014 + 68260015.

It is an arithmetic number, because the mean of its divisors is an integer number (68260015).

Almost surely, 2^136520029 is an apocalyptic number.

It is an amenable number.

136520029 is a deficient number, since it is larger than the sum of its proper divisors (1).

136520029 is an equidigital number, since it uses as much as digits as its factorization.

136520029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 136520029 is about 11684.1785761773. The cubic root of 136520029 is about 514.9109457352.

The spelling of 136520029 in words is "one hundred thirty-six million, five hundred twenty thousand, twenty-nine".