11942171 has 4 divisors (see below), whose sum is σ = 12354000. Its totient is φ = 11530344.

The previous prime is 11942167. The next prime is 11942173. The reversal of 11942171 is 17124911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11942171 - 2² = 11942167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11942171.

It is not an unprimeable number, because it can be changed into a prime (11942173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205871 + ... + 205928.

It is an arithmetic number, because the mean of its divisors is an integer number (3088500).

Almost surely, 2^11942171 is an apocalyptic number.

11942171 is a deficient number, since it is larger than the sum of its proper divisors (411829).

11942171 is an equidigital number, since it uses as much as digits as its factorization.

11942171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411828.

The product of its digits is 504, while the sum is 26.

The square root of 11942171 is about 3455.7446375564. The cubic root of 11942171 is about 228.5744912722.

The spelling of 11942171 in words is "eleven million, nine hundred forty-two thousand, one hundred seventy-one".