11472421 has 2 divisors, whose sum is σ = 11472422. Its totient is φ = 11472420.

The previous prime is 11472413. The next prime is 11472427. The reversal of 11472421 is 12427411.

11472421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11390625 + 81796 = 3375^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 11472421 - 2³ = 11472413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11472392 and 11472401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11472427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5736210 + 5736211.

It is an arithmetic number, because the mean of its divisors is an integer number (5736211).

Almost surely, 2^11472421 is an apocalyptic number.

It is an amenable number.

11472421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11472421 is an equidigital number, since it uses as much as digits as its factorization.

11472421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 22.

The square root of 11472421 is about 3387.0962490015. The cubic root of 11472421 is about 225.5372904376.

Adding to 11472421 its reverse (12427411), we get a palindrome (23899832).

The spelling of 11472421 in words is "eleven million, four hundred seventy-two thousand, four hundred twenty-one".