136742999 has 4 divisors (see below), whose sum is σ = 137340360. Its totient is φ = 136145640.

The previous prime is 136742993. The next prime is 136743001. The reversal of 136742999 is 999247631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136742999 - 2²⁰ = 135694423 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 (136742993) 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 3 ways as a sum of consecutive naturals, for example, 298337 + ... + 298794.

It is an arithmetic number, because the mean of its divisors is an integer number (34335090).

Almost surely, 2^136742999 is an apocalyptic number.

136742999 is a deficient number, since it is larger than the sum of its proper divisors (597361).

136742999 is an equidigital number, since it uses as much as digits as its factorization.

136742999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597360.

The product of its digits is 734832, while the sum is 50.

The square root of 136742999 is about 11693.7162185509. The cubic root of 136742999 is about 515.1911176805.

The spelling of 136742999 in words is "one hundred thirty-six million, seven hundred forty-two thousand, nine hundred ninety-nine".