136212239 has 2 divisors, whose sum is σ = 136212240. Its totient is φ = 136212238.

The previous prime is 136212169. The next prime is 136212253. The reversal of 136212239 is 932212631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136212239 - 2⁸ = 136211983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136212269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68106119 + 68106120.

It is an arithmetic number, because the mean of its divisors is an integer number (68106120).

Almost surely, 2^136212239 is an apocalyptic number.

136212239 is a deficient number, since it is larger than the sum of its proper divisors (1).

136212239 is an equidigital number, since it uses as much as digits as its factorization.

136212239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 136212239 is about 11670.9999143175. Note that the first 4 decimals coincide. The cubic root of 136212239 is about 514.5236919533.

The spelling of 136212239 in words is "one hundred thirty-six million, two hundred twelve thousand, two hundred thirty-nine".