136458461 has 4 divisors (see below), whose sum is σ = 137666172. Its totient is φ = 135250752.

The previous prime is 136458457. The next prime is 136458481. The reversal of 136458461 is 164854631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164854631 = 1667 ⋅98893.

It can be written as a sum of positive squares in 2 ways, for example, as 11689561 + 124768900 = 3419^2 + 11170^2 .

It is a cyclic number.

It is not a de Polignac number, because 136458461 - 2² = 136458457 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 (136458401) 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, 603686 + ... + 603911.

It is an arithmetic number, because the mean of its divisors is an integer number (34416543).

Almost surely, 2^136458461 is an apocalyptic number.

It is an amenable number.

136458461 is a deficient number, since it is larger than the sum of its proper divisors (1207711).

136458461 is a wasteful number, since it uses less digits than its factorization.

136458461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207710.

The product of its digits is 69120, while the sum is 38.

The square root of 136458461 is about 11681.5436051919. The cubic root of 136458461 is about 514.8335290020.

The spelling of 136458461 in words is "one hundred thirty-six million, four hundred fifty-eight thousand, four hundred sixty-one".