11375421 has 4 divisors (see below), whose sum is σ = 15167232. Its totient is φ = 7583612.

The previous prime is 11375417. The next prime is 11375449. The reversal of 11375421 is 12457311.

11375421 is digitally balanced in base 3, 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 a cyclic number.

It is not a de Polignac number, because 11375421 - 2² = 11375417 is a prime.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 11375391 and 11375400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11375401) 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, 1895901 + ... + 1895906.

It is an arithmetic number, because the mean of its divisors is an integer number (3791808).

Almost surely, 2^11375421 is an apocalyptic number.

It is an amenable number.

11375421 is a deficient number, since it is larger than the sum of its proper divisors (3791811).

11375421 is an equidigital number, since it uses as much as digits as its factorization.

11375421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3791810.

The product of its digits is 840, while the sum is 24.

The square root of 11375421 is about 3372.7468034230. The cubic root of 11375421 is about 224.8998467839.

The spelling of 11375421 in words is "eleven million, three hundred seventy-five thousand, four hundred twenty-one".