1020247 has 2 divisors, whose sum is σ = 1020248. Its totient is φ = 1020246.

The previous prime is 1020233. The next prime is 1020259. The reversal of 1020247 is 7420201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020247 - 2¹⁹ = 495959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510123 + 510124.

It is an arithmetic number, because the mean of its divisors is an integer number (510124).

2^1020247 is an apocalyptic number.

1020247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020247 is an equidigital number, since it uses as much as digits as its factorization.

1020247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1020247 is about 1010.0727696557. The cubic root of 1020247 is about 100.6703956535.

Adding to 1020247 its reverse (7420201), we get a palindrome (8440448).

The spelling of 1020247 in words is "one million, twenty thousand, two hundred forty-seven".