11372421 has 4 divisors (see below), whose sum is σ = 15163232. Its totient is φ = 7581612.

The previous prime is 11372401. The next prime is 11372429. The reversal of 11372421 is 12427311.

11372421 is digitally balanced in base 2, 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 Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11372421 - 2¹⁰ = 11371397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11372429) 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, 1895401 + ... + 1895406.

It is an arithmetic number, because the mean of its divisors is an integer number (3790808).

Almost surely, 2^11372421 is an apocalyptic number.

It is an amenable number.

11372421 is a deficient number, since it is larger than the sum of its proper divisors (3790811).

11372421 is an equidigital number, since it uses as much as digits as its factorization.

11372421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790810.

The product of its digits is 336, while the sum is 21.

The square root of 11372421 is about 3372.3020327367. The cubic root of 11372421 is about 224.8800743623.

Adding to 11372421 its reverse (12427311), we get a palindrome (23799732).

The spelling of 11372421 in words is "eleven million, three hundred seventy-two thousand, four hundred twenty-one".