1143493 has 4 divisors (see below), whose sum is σ = 1231468. Its totient is φ = 1055520.

The previous prime is 1143487. The next prime is 1143529. The reversal of 1143493 is 3943411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3943411 = 71 ⋅55541.

It can be written as a sum of positive squares in 2 ways, for example, as 66049 + 1077444 = 257^2 + 1038^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143493 - 2¹⁷ = 1012421 is a prime.

It is a Duffinian number.

1143493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43968 + ... + 43993.

It is an arithmetic number, because the mean of its divisors is an integer number (307867).

2^1143493 is an apocalyptic number.

1143493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1143493 is a deficient number, since it is larger than the sum of its proper divisors (87975).

1143493 is an equidigital number, since it uses as much as digits as its factorization.

1143493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87974.

The product of its digits is 1296, while the sum is 25.

The square root of 1143493 is about 1069.3423212424. The cubic root of 1143493 is about 104.5709780840.

The spelling of 1143493 in words is "one million, one hundred forty-three thousand, four hundred ninety-three".