136266023 has 4 divisors (see below), whose sum is σ = 137516280. Its totient is φ = 135015768.

The previous prime is 136265977. The next prime is 136266029. The reversal of 136266023 is 320662631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320662631 = 109 ⋅2941859.

It is a cyclic number.

It is not a de Polignac number, because 136266023 - 2⁶ = 136265959 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 (136266029) 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, 624965 + ... + 625182.

It is an arithmetic number, because the mean of its divisors is an integer number (34379070).

Almost surely, 2^136266023 is an apocalyptic number.

136266023 is a deficient number, since it is larger than the sum of its proper divisors (1250257).

136266023 is a wasteful number, since it uses less digits than its factorization.

136266023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250256.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 136266023 is about 11673.3038596620. The cubic root of 136266023 is about 514.5914036874.

The spelling of 136266023 in words is "one hundred thirty-six million, two hundred sixty-six thousand, twenty-three".