1145143 has 2 divisors, whose sum is σ = 1145144. Its totient is φ = 1145142.

The previous prime is 1145141. The next prime is 1145173. The reversal of 1145143 is 3415411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145143 - 2¹ = 1145141 is a prime.

It is a super-2 number, since 2×1145143² = 2622704980898, which contains 22 as substring.

Together with 1145141, it forms a pair of twin primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572571 + 572572.

It is an arithmetic number, because the mean of its divisors is an integer number (572572).

2^1145143 is an apocalyptic number.

1145143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145143 is an equidigital number, since it uses as much as digits as its factorization.

1145143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 1145143 is about 1070.1135453773. The cubic root of 1145143 is about 104.6212507108.

It can be divided in two parts, 11 and 45143, that added together give a palindrome (45154).

The spelling of 1145143 in words is "one million, one hundred forty-five thousand, one hundred forty-three".