11922143 has 4 divisors (see below), whose sum is σ = 11935440. Its totient is φ = 11908848.

The previous prime is 11922121. The next prime is 11922193. The reversal of 11922143 is 34122911.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11922143 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 (11922193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5198 + ... + 7131.

It is an arithmetic number, because the mean of its divisors is an integer number (2983860).

Almost surely, 2^11922143 is an apocalyptic number.

11922143 is a deficient number, since it is larger than the sum of its proper divisors (13297).

11922143 is an equidigital number, since it uses as much as digits as its factorization.

11922143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13296.

The product of its digits is 432, while the sum is 23.

The square root of 11922143 is about 3452.8456380209. The cubic root of 11922143 is about 228.4466403852.

The spelling of 11922143 in words is "eleven million, nine hundred twenty-two thousand, one hundred forty-three".