1022641247 has 2 divisors, whose sum is σ = 1022641248. Its totient is φ = 1022641246.

The previous prime is 1022641241. The next prime is 1022641259. The reversal of 1022641247 is 7421462201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1022641247 - 2⁴ = 1022641231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022641241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511320623 + 511320624.

It is an arithmetic number, because the mean of its divisors is an integer number (511320624).

Almost surely, 2^1022641247 is an apocalyptic number.

1022641247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022641247 is an equidigital number, since it uses as much as digits as its factorization.

1022641247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 1022641247 is about 31978.7624369674. The cubic root of 1022641247 is about 1007.4908296940.

The spelling of 1022641247 in words is "one billion, twenty-two million, six hundred forty-one thousand, two hundred forty-seven".