1143061145 has 4 divisors (see below), whose sum is σ = 1371673380. Its totient is φ = 914448912.

The previous prime is 1143061141. The next prime is 1143061169. The reversal of 1143061145 is 5411603411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5411603411 = 79 ⋅68501309.

It can be written as a sum of positive squares in 2 ways, for example, as 609497344 + 533563801 = 24688^2 + 23099^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143061145 - 2² = 1143061141 is a prime.

It is a super-2 number, since 2×1143061145² = 2613177562417422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1143061141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114306110 + ... + 114306119.

It is an arithmetic number, because the mean of its divisors is an integer number (342918345).

Almost surely, 2^1143061145 is an apocalyptic number.

It is an amenable number.

1143061145 is a deficient number, since it is larger than the sum of its proper divisors (228612235).

1143061145 is an equidigital number, since it uses as much as digits as its factorization.

1143061145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228612234.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1143061145 is about 33809.1872868899. The cubic root of 1143061145 is about 1045.5781222988.

Adding to 1143061145 its reverse (5411603411), we get a palindrome (6554664556).

The spelling of 1143061145 in words is "one billion, one hundred forty-three million, sixty-one thousand, one hundred forty-five".