1143147012 has 48 divisors (see below), whose sum is σ = 3180936192. Its totient is φ = 312412320.

The previous prime is 1143146993. The next prime is 1143147017. The reversal of 1143147012 is 2107413411.

It is not an unprimeable number, because it can be changed into a prime (1143147017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293914 + ... + 297777.

It is an arithmetic number, because the mean of its divisors is an integer number (66269504).

Almost surely, 2^1143147012 is an apocalyptic number.

1143147012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1143147012 is an abundant number, since it is smaller than the sum of its proper divisors (2037789180).

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

1143147012 is a wasteful number, since it uses less digits than its factorization.

1143147012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591728 (or 591726 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1143147012 is about 33810.4571397667. The cubic root of 1143147012 is about 1045.6043029947.

The spelling of 1143147012 in words is "one billion, one hundred forty-three million, one hundred forty-seven thousand, twelve".