1143212416 has 32 divisors (see below), whose sum is σ = 2285966880. Its totient is φ = 569479680.

The previous prime is 1143212377. The next prime is 1143212417. The reversal of 1143212416 is 6142123411.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143212417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18210 + ... + 51166.

It is an arithmetic number, because the mean of its divisors is an integer number (71436465).

Almost surely, 2^1143212416 is an apocalyptic number.

1143212416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1143212416 is a deficient number, since it is larger than the sum of its proper divisors (1142754464).

1143212416 is an equidigital number, since it uses as much as digits as its factorization.

1143212416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33242 (or 33230 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 1143212416 is about 33811.4243414855. The cubic root of 1143212416 is about 1045.6242436786.

Adding to 1143212416 its reverse (6142123411), we get a palindrome (7285335827).

The spelling of 1143212416 in words is "one billion, one hundred forty-three million, two hundred twelve thousand, four hundred sixteen".