136234459 has 4 divisors (see below), whose sum is σ = 136262560. Its totient is φ = 136206360.

The previous prime is 136234453. The next prime is 136234477. The reversal of 136234459 is 954432631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 954432631 = 20177 ⋅47303.

It is a cyclic number.

It is not a de Polignac number, because 136234459 - 2⁹ = 136233947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136234453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4707 + ... + 17164.

It is an arithmetic number, because the mean of its divisors is an integer number (34065640).

Almost surely, 2^136234459 is an apocalyptic number.

136234459 is a deficient number, since it is larger than the sum of its proper divisors (28101).

136234459 is an equidigital number, since it uses as much as digits as its factorization.

136234459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28100.

The product of its digits is 77760, while the sum is 37.

The square root of 136234459 is about 11671.9518076455. The cubic root of 136234459 is about 514.5516681344.

The spelling of 136234459 in words is "one hundred thirty-six million, two hundred thirty-four thousand, four hundred fifty-nine".