1282740947 has 2 divisors, whose sum is σ = 1282740948. Its totient is φ = 1282740946.

The previous prime is 1282740941. The next prime is 1282740983. The reversal of 1282740947 is 7490472821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1282740947 - 2²⁸ = 1014305491 is a prime.

It is a super-2 number, since 2×1282740947² = 3290848674220913618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1282740898 and 1282740907.

It is not a weakly prime, because it can be changed into another prime (1282740941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641370473 + 641370474.

It is an arithmetic number, because the mean of its divisors is an integer number (641370474).

Almost surely, 2^1282740947 is an apocalyptic number.

1282740947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282740947 is an equidigital number, since it uses as much as digits as its factorization.

1282740947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 1282740947 is about 35815.3730540392. The cubic root of 1282740947 is about 1086.5415018977.

The spelling of 1282740947 in words is "one billion, two hundred eighty-two million, seven hundred forty thousand, nine hundred forty-seven".