136980029 has 2 divisors, whose sum is σ = 136980030. Its totient is φ = 136980028.

The previous prime is 136980017. The next prime is 136980049. The reversal of 136980029 is 920089631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116748025 + 20232004 = 10805^2 + 4498^2 .

It is a cyclic number.

It is not a de Polignac number, because 136980029 - 2²⁴ = 120202813 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136979974 and 136980001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136980049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68490014 + 68490015.

It is an arithmetic number, because the mean of its divisors is an integer number (68490015).

Almost surely, 2^136980029 is an apocalyptic number.

It is an amenable number.

136980029 is a deficient number, since it is larger than the sum of its proper divisors (1).

136980029 is an equidigital number, since it uses as much as digits as its factorization.

136980029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 136980029 is about 11703.8467607877. The cubic root of 136980029 is about 515.4886228812.

The spelling of 136980029 in words is "one hundred thirty-six million, nine hundred eighty thousand, twenty-nine".