1143021412 has 12 divisors (see below), whose sum is σ = 2154155836. Its totient is φ = 527548320.

The previous prime is 1143021331. The next prime is 1143021419. The reversal of 1143021412 is 2141203411.

It can be written as a sum of positive squares in 2 ways, for example, as 459930916 + 683090496 = 21446^2 + 26136^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1143021412.

It is not an unprimeable number, because it can be changed into a prime (1143021419) 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, 10990539 + ... + 10990642.

Almost surely, 2^1143021412 is an apocalyptic number.

It is an amenable number.

1143021412 is a deficient number, since it is larger than the sum of its proper divisors (1011134424).

1143021412 is a wasteful number, since it uses less digits than its factorization.

1143021412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21981198 (or 21981196 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1143021412 is about 33808.5996752306. The cubic root of 1143021412 is about 1045.5660073340.

Adding to 1143021412 its reverse (2141203411), we get a palindrome (3284224823).

The spelling of 1143021412 in words is "one billion, one hundred forty-three million, twenty-one thousand, four hundred twelve".