1142511443 has 4 divisors (see below), whose sum is σ = 1142914200. Its totient is φ = 1142108688.

The previous prime is 1142511421. The next prime is 1142511449. The reversal of 1142511443 is 3441152411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1142511443 - 2⁶ = 1142511379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142511449) 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, 197093 + ... + 202806.

It is an arithmetic number, because the mean of its divisors is an integer number (285728550).

Almost surely, 2^1142511443 is an apocalyptic number.

1142511443 is a deficient number, since it is larger than the sum of its proper divisors (402757).

1142511443 is an equidigital number, since it uses as much as digits as its factorization.

1142511443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402756.

The product of its digits is 1920, while the sum is 26.

The square root of 1142511443 is about 33801.0568325903. The cubic root of 1142511443 is about 1045.4104880633.

Adding to 1142511443 its reverse (3441152411), we get a palindrome (4583663854).

The spelling of 1142511443 in words is "one billion, one hundred forty-two million, five hundred eleven thousand, four hundred forty-three".