1299143 has 2 divisors, whose sum is σ = 1299144. Its totient is φ = 1299142.

The previous prime is 1299101. The next prime is 1299169. The reversal of 1299143 is 3419921.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3419921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1299143 - 2⁶ = 1299079 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁹ + 9³ + 9⁶ + 1 + 4⁸ + 3¹¹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299173) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649571 + 649572.

It is an arithmetic number, because the mean of its divisors is an integer number (649572).

2^1299143 is an apocalyptic number.

1299143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299143 is an equidigital number, since it uses as much as digits as its factorization.

1299143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 29.

The square root of 1299143 is about 1139.7995437795. The cubic root of 1299143 is about 109.1153003751.

The spelling of 1299143 in words is "one million, two hundred ninety-nine thousand, one hundred forty-three".