11420723 has 4 divisors (see below), whose sum is σ = 11427528. Its totient is φ = 11413920.

The previous prime is 11420713. The next prime is 11420789. The reversal of 11420723 is 32702411.

11420723 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32702411 = 7 ⋅4671773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11420723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11420695 and 11420704.

It is not an unprimeable number, because it can be changed into a prime (11420713) 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, 1115 + ... + 4907.

It is an arithmetic number, because the mean of its divisors is an integer number (2856882).

Almost surely, 2^11420723 is an apocalyptic number.

11420723 is a deficient number, since it is larger than the sum of its proper divisors (6805).

11420723 is an equidigital number, since it uses as much as digits as its factorization.

11420723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 11420723 is about 3379.4560213147. The cubic root of 11420723 is about 225.1980018373.

The spelling of 11420723 in words is "eleven million, four hundred twenty thousand, seven hundred twenty-three".