11767421 has 4 divisors (see below), whose sum is σ = 12279072. Its totient is φ = 11255772.

The previous prime is 11767397. The next prime is 11767429. The reversal of 11767421 is 12476711.

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 11767421 - 2¹⁴ = 11751037 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 (11767429) 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, 255791 + ... + 255836.

It is an arithmetic number, because the mean of its divisors is an integer number (3069768).

Almost surely, 2^11767421 is an apocalyptic number.

It is an amenable number.

11767421 is a deficient number, since it is larger than the sum of its proper divisors (511651).

11767421 is an equidigital number, since it uses as much as digits as its factorization.

11767421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511650.

The product of its digits is 2352, while the sum is 29.

The square root of 11767421 is about 3430.3674730268. The cubic root of 11767421 is about 227.4540969255.

The spelling of 11767421 in words is "eleven million, seven hundred sixty-seven thousand, four hundred twenty-one".