11772143 has 8 divisors (see below), whose sum is σ = 12516768. Its totient is φ = 11033344.

The previous prime is 11772133. The next prime is 11772161. The reversal of 11772143 is 34127711.

It is a happy number.

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 11772143 - 2¹⁰ = 11771119 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 (11772133) 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, 3155 + ... + 5787.

It is an arithmetic number, because the mean of its divisors is an integer number (1564596).

Almost surely, 2^11772143 is an apocalyptic number.

11772143 is a deficient number, since it is larger than the sum of its proper divisors (744625).

11772143 is a wasteful number, since it uses less digits than its factorization.

11772143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913.

The product of its digits is 1176, while the sum is 26.

The square root of 11772143 is about 3431.0556684496. The cubic root of 11772143 is about 227.4845169192.

Adding to 11772143 its reverse (34127711), we get a palindrome (45899854).

The spelling of 11772143 in words is "eleven million, seven hundred seventy-two thousand, one hundred forty-three".