1143145141 has 4 divisors (see below), whose sum is σ = 1143217152. Its totient is φ = 1143073132.

The previous prime is 1143145111. The next prime is 1143145147. The reversal of 1143145141 is 1415413411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1415413411 = 29 ⋅48807359.

It is a cyclic number.

It is not a de Polignac number, because 1143145141 - 2¹¹ = 1143143093 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 (1143145147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565 + ... + 47818.

It is an arithmetic number, because the mean of its divisors is an integer number (285804288).

Almost surely, 2^1143145141 is an apocalyptic number.

It is an amenable number.

1143145141 is a deficient number, since it is larger than the sum of its proper divisors (72011).

1143145141 is an equidigital number, since it uses as much as digits as its factorization.

1143145141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72010.

The product of its digits is 960, while the sum is 25.

The square root of 1143145141 is about 33810.4294708009. The cubic root of 1143145141 is about 1045.6037325441.

Adding to 1143145141 its reverse (1415413411), we get a palindrome (2558558552).

The spelling of 1143145141 in words is "one billion, one hundred forty-three million, one hundred forty-five thousand, one hundred forty-one".