1143534 has 32 divisors (see below), whose sum is σ = 2753280. Its totient is φ = 309312.

The previous prime is 1143529. The next prime is 1143551. The reversal of 1143534 is 4353411.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82 + ... + 1514.

It is an arithmetic number, because the mean of its divisors is an integer number (86040).

2^1143534 is an apocalyptic number.

1143534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1376640).

1143534 is an abundant number, since it is smaller than the sum of its proper divisors (1609746).

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

1143534 is a wasteful number, since it uses less digits than its factorization.

1143534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

The product of its digits is 720, while the sum is 21.

The square root of 1143534 is about 1069.3614917323. The cubic root of 1143534 is about 104.5722278683.

Adding to 1143534 its reverse (4353411), we get a palindrome (5496945).

It can be divided in two parts, 11 and 43534, that multiplied together give a palindrome (478874).

The spelling of 1143534 in words is "one million, one hundred forty-three thousand, five hundred thirty-four".