1243641339 has 12 divisors (see below), whose sum is σ = 1796698800. Its totient is φ = 828942864.

The previous prime is 1243641323. The next prime is 1243641367. The reversal of 1243641339 is 9331463421.

1243641339 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 641 + 3 + 3 + 9 = 666.

1243641339 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1243641339 - 2⁴ = 1243641323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243641439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63757 + ... + 80945.

It is an arithmetic number, because the mean of its divisors is an integer number (149724900).

Almost surely, 2^1243641339 is an apocalyptic number.

1243641339 is a deficient number, since it is larger than the sum of its proper divisors (553057461).

1243641339 is a wasteful number, since it uses less digits than its factorization.

1243641339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25234 (or 25231 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 1243641339 is about 35265.2993607030. The cubic root of 1243641339 is about 1075.3876630338.

It can be divided in two parts, 124 and 3641339, that added together give a palindrome (3641463).

The spelling of 1243641339 in words is "one billion, two hundred forty-three million, six hundred forty-one thousand, three hundred thirty-nine".