1243410099 has 4 divisors (see below), whose sum is σ = 1657880136. Its totient is φ = 828940064.

The previous prime is 1243410079. The next prime is 1243410139. The reversal of 1243410099 is 9900143421.

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 1243410099 - 2⁵ = 1243410067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243410029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207235014 + ... + 207235019.

It is an arithmetic number, because the mean of its divisors is an integer number (414470034).

Almost surely, 2^1243410099 is an apocalyptic number.

1243410099 is a deficient number, since it is larger than the sum of its proper divisors (414470037).

1243410099 is an equidigital number, since it uses as much as digits as its factorization.

1243410099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414470036.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1243410099 is about 35262.0206312684. The cubic root of 1243410099 is about 1075.3210071447.

The spelling of 1243410099 in words is "one billion, two hundred forty-three million, four hundred ten thousand, ninety-nine".