1199143 has 4 divisors (see below), whose sum is σ = 1308168. Its totient is φ = 1090120.

The previous prime is 1199137. The next prime is 1199167. The reversal of 1199143 is 3419911.

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: 3419911 = 11 ⋅310901.

It is a cyclic number.

It is not a de Polignac number, because 1199143 - 2¹³ = 1190951 is a prime.

It is a Duffinian number.

1199143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199123) 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, 54496 + ... + 54517.

It is an arithmetic number, because the mean of its divisors is an integer number (327042).

2^1199143 is an apocalyptic number.

1199143 is a deficient number, since it is larger than the sum of its proper divisors (109025).

1199143 is a wasteful number, since it uses less digits than its factorization.

1199143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109024.

The product of its digits is 972, while the sum is 28.

The square root of 1199143 is about 1095.0538799529. The cubic root of 1199143 is about 106.2405537161.

The spelling of 1199143 in words is "one million, one hundred ninety-nine thousand, one hundred forty-three".