1147144 has 16 divisors (see below), whose sum is σ = 2264400. Its totient is φ = 543312.

The previous prime is 1147141. The next prime is 1147169. The reversal of 1147144 is 4417411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1147141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3622 + ... + 3925.

It is an arithmetic number, because the mean of its divisors is an integer number (141525).

2^1147144 is an apocalyptic number.

It is an amenable number.

1147144 is a deficient number, since it is larger than the sum of its proper divisors (1117256).

1147144 is a wasteful number, since it uses less digits than its factorization.

1147144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7572 (or 7568 counting only the distinct ones).

The product of its digits is 448, while the sum is 22.

The square root of 1147144 is about 1071.0480848216. The cubic root of 1147144 is about 104.6821529459.

The spelling of 1147144 in words is "one million, one hundred forty-seven thousand, one hundred forty-four".