136506743 has 4 divisors (see below), whose sum is σ = 136759608. Its totient is φ = 136253880.

The previous prime is 136506739. The next prime is 136506749. The reversal of 136506743 is 347605631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347605631 = 6053 ⋅57427.

It is a cyclic number.

It is not a de Polignac number, because 136506743 - 2² = 136506739 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 (136506749) 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, 125621 + ... + 126702.

It is an arithmetic number, because the mean of its divisors is an integer number (34189902).

Almost surely, 2^136506743 is an apocalyptic number.

136506743 is a deficient number, since it is larger than the sum of its proper divisors (252865).

136506743 is an equidigital number, since it uses as much as digits as its factorization.

136506743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252864.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 136506743 is about 11683.6100157443. The cubic root of 136506743 is about 514.8942416447.

The spelling of 136506743 in words is "one hundred thirty-six million, five hundred six thousand, seven hundred forty-three".