1261069 has 2 divisors, whose sum is σ = 1261070. Its totient is φ = 1261068.

The previous prime is 1261033. The next prime is 1261079. The reversal of 1261069 is 9601621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1127844 + 133225 = 1062^2 + 365^2 .

It is an emirp because it is prime and its reverse (9601621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1261069 - 2¹³ = 1252877 is a prime.

It is a super-2 number, since 2×1261069² = 3180590045522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1261079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630534 + 630535.

It is an arithmetic number, because the mean of its divisors is an integer number (630535).

2^1261069 is an apocalyptic number.

It is an amenable number.

1261069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1261069 is an equidigital number, since it uses as much as digits as its factorization.

1261069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1261069 is about 1122.9732855237. The cubic root of 1261069 is about 108.0387663759.

The spelling of 1261069 in words is "one million, two hundred sixty-one thousand, sixty-nine".