1143723 has 16 divisors (see below), whose sum is σ = 1762560. Its totient is φ = 646176.

The previous prime is 1143719. The next prime is 1143749. The reversal of 1143723 is 3273411.

It is not a de Polignac number, because 1143723 - 2² = 1143719 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1143723.

It is not an unprimeable number, because it can be changed into a prime (1143763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1993 + ... + 2501.

It is an arithmetic number, because the mean of its divisors is an integer number (110160).

2^1143723 is an apocalyptic number.

1143723 is a deficient number, since it is larger than the sum of its proper divisors (618837).

1143723 is a wasteful number, since it uses less digits than its factorization.

1143723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626.

The product of its digits is 504, while the sum is 21.

The square root of 1143723 is about 1069.4498585722. The cubic root of 1143723 is about 104.5779886830.

It can be divided in two parts, 11 and 43723, that added together give a palindrome (43734).

The spelling of 1143723 in words is "one million, one hundred forty-three thousand, seven hundred twenty-three".