1143421141 has 4 divisors (see below), whose sum is σ = 1143488800. Its totient is φ = 1143353484.

The previous prime is 1143421093. The next prime is 1143421157. The reversal of 1143421141 is 1411243411.

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.

It is a cyclic number.

It is not a de Polignac number, because 1143421141 - 2¹¹ = 1143419093 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 (1143424141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15430 + ... + 50248.

It is an arithmetic number, because the mean of its divisors is an integer number (285872200).

Almost surely, 2^1143421141 is an apocalyptic number.

It is an amenable number.

1143421141 is a deficient number, since it is larger than the sum of its proper divisors (67659).

1143421141 is an equidigital number, since it uses as much as digits as its factorization.

1143421141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67658.

The product of its digits is 384, while the sum is 22.

The square root of 1143421141 is about 33814.5108052741. The cubic root of 1143421141 is about 1045.6878756675.

Adding to 1143421141 its reverse (1411243411), we get a palindrome (2554664552).

The spelling of 1143421141 in words is "one billion, one hundred forty-three million, four hundred twenty-one thousand, one hundred forty-one".