11433421 has 4 divisors (see below), whose sum is σ = 12035200. Its totient is φ = 10831644.

The previous prime is 11433419. The next prime is 11433427. The reversal of 11433421 is 12433411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12433411 = 139 ⋅89449.

It is a cyclic number.

It is not a de Polignac number, because 11433421 - 2¹ = 11433419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 601759 = 11433421 / (1 + 1 + 4 + 3 + 3 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11433427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300861 + ... + 300898.

It is an arithmetic number, because the mean of its divisors is an integer number (3008800).

Almost surely, 2^11433421 is an apocalyptic number.

It is an amenable number.

11433421 is a deficient number, since it is larger than the sum of its proper divisors (601779).

11433421 is an equidigital number, since it uses as much as digits as its factorization.

11433421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601778.

The product of its digits is 288, while the sum is 19.

The square root of 11433421 is about 3381.3342041271. The cubic root of 11433421 is about 225.2814321972.

Adding to 11433421 its reverse (12433411), we get a palindrome (23866832).

The spelling of 11433421 in words is "eleven million, four hundred thirty-three thousand, four hundred twenty-one".