1224971047 has 4 divisors (see below), whose sum is σ = 1225425280. Its totient is φ = 1224516816.

The previous prime is 1224970987. The next prime is 1224971071. The reversal of 1224971047 is 7401794221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224971047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224970997 and 1224971015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224971087) by changing a digit.

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, 223047 + ... + 228472.

It is an arithmetic number, because the mean of its divisors is an integer number (306356320).

Almost surely, 2^1224971047 is an apocalyptic number.

1224971047 is a deficient number, since it is larger than the sum of its proper divisors (454233).

1224971047 is an equidigital number, since it uses as much as digits as its factorization.

1224971047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454232.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1224971047 is about 34999.5863832703. The cubic root of 1224971047 is about 1069.9790507442.

The spelling of 1224971047 in words is "one billion, two hundred twenty-four million, nine hundred seventy-one thousand, forty-seven".