136242973 has 2 divisors, whose sum is σ = 136242974. Its totient is φ = 136242972.

The previous prime is 136242943. The next prime is 136243021. The reversal of 136242973 is 379242631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103673124 + 32569849 = 10182^2 + 5707^2 .

It is a cyclic number.

It is not a de Polignac number, because 136242973 - 2¹⁷ = 136111901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136242943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68121486 + 68121487.

It is an arithmetic number, because the mean of its divisors is an integer number (68121487).

Almost surely, 2^136242973 is an apocalyptic number.

It is an amenable number.

136242973 is a deficient number, since it is larger than the sum of its proper divisors (1).

136242973 is an equidigital number, since it uses as much as digits as its factorization.

136242973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 136242973 is about 11672.3165224389. The cubic root of 136242973 is about 514.5623869146.

The spelling of 136242973 in words is "one hundred thirty-six million, two hundred forty-two thousand, nine hundred seventy-three".