1243140316 has 12 divisors (see below), whose sum is σ = 2373267960. Its totient is φ = 565063760.

The previous prime is 1243140307. The next prime is 1243140323. The reversal of 1243140316 is 6130413421.

It is a congruent number.

It is an unprimeable number.

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, 14126551 + ... + 14126638.

It is an arithmetic number, because the mean of its divisors is an integer number (197772330).

Almost surely, 2^1243140316 is an apocalyptic number.

It is an amenable number.

1243140316 is a deficient number, since it is larger than the sum of its proper divisors (1130127644).

1243140316 is a wasteful number, since it uses less digits than its factorization.

1243140316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28253204 (or 28253202 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1243140316 is about 35258.1950190307. The cubic root of 1243140316 is about 1075.2432306302.

Adding to 1243140316 its reverse (6130413421), we get a palindrome (7373553737).

The spelling of 1243140316 in words is "one billion, two hundred forty-three million, one hundred forty thousand, three hundred sixteen".