136166123 has 4 divisors (see below), whose sum is σ = 136208928. Its totient is φ = 136123320.

The previous prime is 136166113. The next prime is 136166161. The reversal of 136166123 is 321661631.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136166123 is a prime.

It is a super-2 number, since 2×136166123² = 37082426105702258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136166113) 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, 16211 + ... + 23132.

It is an arithmetic number, because the mean of its divisors is an integer number (34052232).

Almost surely, 2^136166123 is an apocalyptic number.

136166123 is a deficient number, since it is larger than the sum of its proper divisors (42805).

136166123 is an equidigital number, since it uses as much as digits as its factorization.

136166123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42804.

The product of its digits is 3888, while the sum is 29.

The square root of 136166123 is about 11669.0240808733. The cubic root of 136166123 is about 514.4656197051.

The spelling of 136166123 in words is "one hundred thirty-six million, one hundred sixty-six thousand, one hundred twenty-three".