6842436247 has 4 divisors (see below), whose sum is σ = 6843350200. Its totient is φ = 6841522296.

The previous prime is 6842436241. The next prime is 6842436269. The reversal of 6842436247 is 7426342486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7426342486 = 2 ⋅3713171243.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6842436247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6842436197 and 6842436206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6842436241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445653 + ... + 460750.

It is an arithmetic number, because the mean of its divisors is an integer number (1710837550).

Almost surely, 2^6842436247 is an apocalyptic number.

6842436247 is a deficient number, since it is larger than the sum of its proper divisors (913953).

6842436247 is an equidigital number, since it uses as much as digits as its factorization.

6842436247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913952.

The product of its digits is 1548288, while the sum is 46.

The square root of 6842436247 is about 82719.0198624234. The cubic root of 6842436247 is about 1898.4693347970.

The spelling of 6842436247 in words is "six billion, eight hundred forty-two million, four hundred thirty-six thousand, two hundred forty-seven".