1243199 has 4 divisors (see below), whose sum is σ = 1247736. Its totient is φ = 1238664.

The previous prime is 1243181. The next prime is 1243211. The reversal of 1243199 is 9913421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1243199 - 2¹² = 1239103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1829 + ... + 2414.

It is an arithmetic number, because the mean of its divisors is an integer number (311934).

2^1243199 is an apocalyptic number.

1243199 is a deficient number, since it is larger than the sum of its proper divisors (4537).

1243199 is an equidigital number, since it uses as much as digits as its factorization.

1243199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4536.

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

The square root of 1243199 is about 1114.9883407462. The cubic root of 1243199 is about 107.5260149766.

The spelling of 1243199 in words is "one million, two hundred forty-three thousand, one hundred ninety-nine".