11845143 has 32 divisors (see below), whose sum is σ = 18385920. Its totient is φ = 7529760.

The previous prime is 11845133. The next prime is 11845153. The reversal of 11845143 is 34154811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11845133) and next prime (11845153).

It is not a de Polignac number, because 11845143 - 2¹⁸ = 11582999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11845123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70846 + ... + 71012.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^11845143 is an apocalyptic number.

11845143 is a deficient number, since it is larger than the sum of its proper divisors (6540777).

11845143 is a wasteful number, since it uses less digits than its factorization.

11845143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 278 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 11845143 is about 3441.6773526872. The cubic root of 11845143 is about 227.9537648630.

Adding to 11845143 its reverse (34154811), we get a palindrome (45999954).

The spelling of 11845143 in words is "eleven million, eight hundred forty-five thousand, one hundred forty-three".