136242999 has 16 divisors (see below), whose sum is σ = 203926240. Its totient is φ = 89890560.

The previous prime is 136242973. The next prime is 136243021. The reversal of 136242999 is 999242631.

It is a happy number.

136242999 is a `hidden beast` number, since 13 + 624 + 2 + 9 + 9 + 9 = 666.

It is not a de Polignac number, because 136242999 - 2⁷ = 136242871 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 (136242919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23392 + ... + 28629.

It is an arithmetic number, because the mean of its divisors is an integer number (12745390).

Almost surely, 2^136242999 is an apocalyptic number.

136242999 is a deficient number, since it is larger than the sum of its proper divisors (67683241).

136242999 is an equidigital number, since it uses as much as digits as its factorization.

136242999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52127 (or 52121 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 136242999 is about 11672.3176361852. The cubic root of 136242999 is about 514.5624196468.

The spelling of 136242999 in words is "one hundred thirty-six million, two hundred forty-two thousand, nine hundred ninety-nine".