11420471 has 2 divisors, whose sum is σ = 11420472. Its totient is φ = 11420470.

The previous prime is 11420441. The next prime is 11420473. The reversal of 11420471 is 17402411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11420471 - 2¹⁴ = 11404087 is a prime.

It is a super-3 number, since 3×11420471³ (a number of 22 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 11420473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11420473) 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 as a sum of consecutive naturals, namely, 5710235 + 5710236.

It is an arithmetic number, because the mean of its divisors is an integer number (5710236).

Almost surely, 2^11420471 is an apocalyptic number.

11420471 is a deficient number, since it is larger than the sum of its proper divisors (1).

11420471 is an equidigital number, since it uses as much as digits as its factorization.

11420471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 11420471 is about 3379.4187370020. The cubic root of 11420471 is about 225.1963454824.

Adding to 11420471 its reverse (17402411), we get a palindrome (28822882).

The spelling of 11420471 in words is "eleven million, four hundred twenty thousand, four hundred seventy-one".