1143738 has 12 divisors (see below), whose sum is σ = 2478138. Its totient is φ = 381240.

The previous prime is 1143719. The next prime is 1143749. The reversal of 1143738 is 8373411.

It can be written as a sum of positive squares in only one way, i.e., 815409 + 328329 = 903^2 + 573^2 .

It is a super-2 number, since 2×1143738² = 2616273225288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31753 + ... + 31788.

2^1143738 is an apocalyptic number.

1143738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1143738 is an abundant number, since it is smaller than the sum of its proper divisors (1334400).

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

1143738 is a wasteful number, since it uses less digits than its factorization.

1143738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63549 (or 63546 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1143738 is about 1069.4568715007. The cubic root of 1143738 is about 104.5784458633.

It can be divided in two parts, 1143 and 738, that added together give a palindrome (1881).

The spelling of 1143738 in words is "one million, one hundred forty-three thousand, seven hundred thirty-eight".