1142647684 has 24 divisors (see below), whose sum is σ = 2034869760. Its totient is φ = 561317184.

The previous prime is 1142647663. The next prime is 1142647687. The reversal of 1142647684 is 4867462411.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142647684.

It is not an unprimeable number, because it can be changed into a prime (1142647687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69357 + ... + 84235.

It is an arithmetic number, because the mean of its divisors is an integer number (84786240).

Almost surely, 2^1142647684 is an apocalyptic number.

It is an amenable number.

1142647684 is a deficient number, since it is larger than the sum of its proper divisors (892222076).

1142647684 is a wasteful number, since it uses less digits than its factorization.

1142647684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15219 (or 15217 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 1142647684 is about 33803.0721089075. The cubic root of 1142647684 is about 1045.4520404142.

The spelling of 1142647684 in words is "one billion, one hundred forty-two million, six hundred forty-seven thousand, six hundred eighty-four".