136122427 has 4 divisors (see below), whose sum is σ = 155568496. Its totient is φ = 116676360.

The previous prime is 136122373. The next prime is 136122449. The reversal of 136122427 is 724221631.

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-136122427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136122395 and 136122404.

It is not an unprimeable number, because it can be changed into a prime (136122827) 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, 9723024 + ... + 9723037.

It is an arithmetic number, because the mean of its divisors is an integer number (38892124).

Almost surely, 2^136122427 is an apocalyptic number.

136122427 is a deficient number, since it is larger than the sum of its proper divisors (19446069).

136122427 is an equidigital number, since it uses as much as digits as its factorization.

136122427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19446068.

The product of its digits is 4032, while the sum is 28.

The square root of 136122427 is about 11667.1516232541. The cubic root of 136122427 is about 514.4105827784.

The spelling of 136122427 in words is "one hundred thirty-six million, one hundred twenty-two thousand, four hundred twenty-seven".