136243001 has 4 divisors (see below), whose sum is σ = 136267392. Its totient is φ = 136218612.

The previous prime is 136242973. The next prime is 136243021. The reversal of 136243001 is 100342631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136243001 - 2⁶ = 136242937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136243021) 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, 800 + ... + 16526.

It is an arithmetic number, because the mean of its divisors is an integer number (34066848).

Almost surely, 2^136243001 is an apocalyptic number.

It is an amenable number.

136243001 is a deficient number, since it is larger than the sum of its proper divisors (24391).

136243001 is an equidigital number, since it uses as much as digits as its factorization.

136243001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24390.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 136243001 is about 11672.3177218580. The cubic root of 136243001 is about 514.5624221647.

Adding to 136243001 its reverse (100342631), we get a palindrome (236585632).

The spelling of 136243001 in words is "one hundred thirty-six million, two hundred forty-three thousand, one".