1111444143 has 8 divisors (see below), whose sum is σ = 1483966848. Its totient is φ = 739942104.

The previous prime is 1111444129. The next prime is 1111444181. The reversal of 1111444143 is 3414441111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111444143 - 2⁸ = 1111443887 is a prime.

It is a super-3 number, since 3×1111444143³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111464143) 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 7 ways as a sum of consecutive naturals, for example, 252621 + ... + 256982.

It is an arithmetic number, because the mean of its divisors is an integer number (185495856).

Almost surely, 2^1111444143 is an apocalyptic number.

1111444143 is a deficient number, since it is larger than the sum of its proper divisors (372522705).

1111444143 is an equidigital number, since it uses as much as digits as its factorization.

1111444143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510333.

The product of its digits is 768, while the sum is 24.

The square root of 1111444143 is about 33338.3284374007. The cubic root of 1111444143 is about 1035.8476390654.

Adding to 1111444143 its reverse (3414441111), we get a palindrome (4525885254).

The spelling of 1111444143 in words is "one billion, one hundred eleven million, four hundred forty-four thousand, one hundred forty-three".