11423421 has 12 divisors (see below), whose sum is σ = 16662048. Its totient is φ = 7541064.

The previous prime is 11423411. The next prime is 11423429. The reversal of 11423421 is 12432411.

11423421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11423421 - 2⁹ = 11422909 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11423394 and 11423403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5235 + ... + 7088.

It is an arithmetic number, because the mean of its divisors is an integer number (1388504).

Almost surely, 2^11423421 is an apocalyptic number.

It is an amenable number.

11423421 is a deficient number, since it is larger than the sum of its proper divisors (5238627).

11423421 is a wasteful number, since it uses less digits than its factorization.

11423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12432 (or 12429 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 11423421 is about 3379.8551744121. The cubic root of 11423421 is about 225.2157338254.

Adding to 11423421 its reverse (12432411), we get a palindrome (23855832).

The spelling of 11423421 in words is "eleven million, four hundred twenty-three thousand, four hundred twenty-one".