11570421 has 8 divisors (see below), whose sum is σ = 16334784. Its totient is φ = 7259840.

The previous prime is 11570407. The next prime is 11570423. The reversal of 11570421 is 12407511.

It is a happy number.

11570421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11570421 - 2¹¹ = 11568373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11570423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113385 + ... + 113486.

It is an arithmetic number, because the mean of its divisors is an integer number (2041848).

Almost surely, 2^11570421 is an apocalyptic number.

It is an amenable number.

11570421 is a deficient number, since it is larger than the sum of its proper divisors (4764363).

11570421 is a wasteful number, since it uses less digits than its factorization.

11570421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226891.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 11570421 is about 3401.5321547797. The cubic root of 11570421 is about 226.1776672207.

Adding to 11570421 its reverse (12407511), we get a palindrome (23977932).

The spelling of 11570421 in words is "eleven million, five hundred seventy thousand, four hundred twenty-one".