1020269 has 2 divisors, whose sum is σ = 1020270. Its totient is φ = 1020268.

The previous prime is 1020259. The next prime is 1020293. The reversal of 1020269 is 9620201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1020100 + 169 = 1010^2 + 13^2 .

It is an emirp because it is prime and its reverse (9620201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020269 - 2⁸ = 1020013 is a prime.

It is a super-2 number, since 2×1020269² = 2081897664722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510134 + 510135.

It is an arithmetic number, because the mean of its divisors is an integer number (510135).

2^1020269 is an apocalyptic number.

It is an amenable number.

1020269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020269 is an equidigital number, since it uses as much as digits as its factorization.

1020269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1020269 is about 1010.0836599015. The cubic root of 1020269 is about 100.6711192471.

The spelling of 1020269 in words is "one million, twenty thousand, two hundred sixty-nine".