136145939 has 2 divisors, whose sum is σ = 136145940. Its totient is φ = 136145938.

The previous prime is 136145921. The next prime is 136145941. The reversal of 136145939 is 939541631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136145939 - 2⁸ = 136145683 is a prime.

Together with 136145941, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136145896 and 136145905.

It is not a weakly prime, because it can be changed into another prime (136145909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68072969 + 68072970.

It is an arithmetic number, because the mean of its divisors is an integer number (68072970).

Almost surely, 2^136145939 is an apocalyptic number.

136145939 is a deficient number, since it is larger than the sum of its proper divisors (1).

136145939 is an equidigital number, since it uses as much as digits as its factorization.

136145939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 41.

The square root of 136145939 is about 11668.1591950059. The cubic root of 136145939 is about 514.4401985823.

The spelling of 136145939 in words is "one hundred thirty-six million, one hundred forty-five thousand, nine hundred thirty-nine".