1143121435 has 16 divisors (see below), whose sum is σ = 1417946112. Its totient is φ = 883778400.

The previous prime is 1143121433. The next prime is 1143121481. The reversal of 1143121435 is 5341213411.

It is not a de Polignac number, because 1143121435 - 2¹ = 1143121433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143121433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117300 + ... + 126670.

It is an arithmetic number, because the mean of its divisors is an integer number (88621632).

Almost surely, 2^1143121435 is an apocalyptic number.

1143121435 is a deficient number, since it is larger than the sum of its proper divisors (274824677).

1143121435 is an equidigital number, since it uses as much as digits as its factorization.

1143121435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10194.

The product of its digits is 1440, while the sum is 25.

The square root of 1143121435 is about 33810.0788966840. The cubic root of 1143121435 is about 1045.5965047499.

Adding to 1143121435 its reverse (5341213411), we get a palindrome (6484334846).

The spelling of 1143121435 in words is "one billion, one hundred forty-three million, one hundred twenty-one thousand, four hundred thirty-five".