1143340 has 24 divisors (see below), whose sum is σ = 2619792. Its totient is φ = 415680.

The previous prime is 1143299. The next prime is 1143341. The reversal of 1143340 is 433411.

It is not an unprimeable number, because it can be changed into a prime (1143341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2379 + ... + 2818.

It is an arithmetic number, because the mean of its divisors is an integer number (109158).

2^1143340 is an apocalyptic number.

1143340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143340 is an abundant number, since it is smaller than the sum of its proper divisors (1476452).

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

1143340 is a wasteful number, since it uses less digits than its factorization.

1143340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217 (or 5215 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1143340 is about 1069.2707795503. The cubic root of 1143340 is about 104.5663139909.

Adding to 1143340 its reverse (433411), we get a palindrome (1576751).

It can be divided in two parts, 1 and 143340, that added together give a palindrome (143341).

The spelling of 1143340 in words is "one million, one hundred forty-three thousand, three hundred forty".