247122943 has 2 divisors, whose sum is σ = 247122944. Its totient is φ = 247122942.

The previous prime is 247122937. The next prime is 247122961. The reversal of 247122943 is 349221742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247122943 - 2⁹ = 247122431 is a prime.

It is a super-2 number, since 2×247122943² = 122139497913962498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247122899 and 247122908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247122913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123561471 + 123561472.

It is an arithmetic number, because the mean of its divisors is an integer number (123561472).

Almost surely, 2^247122943 is an apocalyptic number.

247122943 is a deficient number, since it is larger than the sum of its proper divisors (1).

247122943 is an equidigital number, since it uses as much as digits as its factorization.

247122943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 247122943 is about 15720.1444967914. The cubic root of 247122943 is about 627.5346185988.

The spelling of 247122943 in words is "two hundred forty-seven million, one hundred twenty-two thousand, nine hundred forty-three".