1143142536 has 16 divisors (see below), whose sum is σ = 2857856400. Its totient is φ = 381047504.

The previous prime is 1143142499. The next prime is 1143142537. The reversal of 1143142536 is 6352413411.

It is a super-2 number, since 2×1143142536² = 2613549715225022592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1143142537) 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, 23815446 + ... + 23815493.

It is an arithmetic number, because the mean of its divisors is an integer number (178616025).

Almost surely, 2^1143142536 is an apocalyptic number.

It is an amenable number.

1143142536 is an abundant number, since it is smaller than the sum of its proper divisors (1714713864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143142536 is a wasteful number, since it uses less digits than its factorization.

1143142536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47630948 (or 47630944 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 1143142536 is about 33810.3909471630. The cubic root of 1143142536 is about 1045.6029383026.

Adding to 1143142536 its reverse (6352413411), we get a palindrome (7495555947).

The spelling of 1143142536 in words is "one billion, one hundred forty-three million, one hundred forty-two thousand, five hundred thirty-six".