136745239 has 8 divisors (see below), whose sum is σ = 138609072. Its totient is φ = 134886720.

The previous prime is 136745233. The next prime is 136745243. The reversal of 136745239 is 932547631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136745239 - 2¹⁷ = 136614167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136745233) 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 in 7 ways as a sum of consecutive naturals, for example, 98329 + ... + 99709.

It is an arithmetic number, because the mean of its divisors is an integer number (17326134).

Almost surely, 2^136745239 is an apocalyptic number.

136745239 is a deficient number, since it is larger than the sum of its proper divisors (1863833).

136745239 is a wasteful number, since it uses less digits than its factorization.

136745239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657.

The product of its digits is 136080, while the sum is 40.

The square root of 136745239 is about 11693.8119960943. The cubic root of 136745239 is about 515.1939307966.

The spelling of 136745239 in words is "one hundred thirty-six million, seven hundred forty-five thousand, two hundred thirty-nine".