1143748 has 6 divisors (see below), whose sum is σ = 2001566. Its totient is φ = 571872.

The previous prime is 1143719. The next prime is 1143749. The reversal of 1143748 is 8473411.

It can be written as a sum of positive squares in only one way, i.e., 636804 + 506944 = 798^2 + 712^2 .

It is not an unprimeable number, because it can be changed into a prime (1143749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142965 + ... + 142972.

2^1143748 is an apocalyptic number.

It is an amenable number.

1143748 is a deficient number, since it is larger than the sum of its proper divisors (857818).

1143748 is a wasteful number, since it uses less digits than its factorization.

1143748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285941 (or 285939 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 1143748 is about 1069.4615467608. The cubic root of 1143748 is about 104.5787506479.

It can be divided in two parts, 1143 and 748, that added together give a triangular number (1891 = T₆₁).

The spelling of 1143748 in words is "one million, one hundred forty-three thousand, seven hundred forty-eight".