11742743 has 4 divisors (see below), whose sum is σ = 11773320. Its totient is φ = 11712168.

The previous prime is 11742713. The next prime is 11742751. The reversal of 11742743 is 34724711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34724711 = 7 ⋅4960673.

It is a cyclic number.

It is not a de Polignac number, because 11742743 - 2¹² = 11738647 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 (11742713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14705 + ... + 15482.

It is an arithmetic number, because the mean of its divisors is an integer number (2943330).

Almost surely, 2^11742743 is an apocalyptic number.

11742743 is a deficient number, since it is larger than the sum of its proper divisors (30577).

11742743 is an equidigital number, since it uses as much as digits as its factorization.

11742743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30576.

The product of its digits is 4704, while the sum is 29.

The square root of 11742743 is about 3426.7685944633. The cubic root of 11742743 is about 227.2949841621.

The spelling of 11742743 in words is "eleven million, seven hundred forty-two thousand, seven hundred forty-three".