1268261 has 2 divisors, whose sum is σ = 1268262. Its totient is φ = 1268260.

The previous prime is 1268233. The next prime is 1268279. The reversal of 1268261 is 1628621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1113025 + 155236 = 1055^2 + 394^2 .

It is an emirp because it is prime and its reverse (1628621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1268261 - 2¹⁰ = 1267237 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1268261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1268221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634130 + 634131.

It is an arithmetic number, because the mean of its divisors is an integer number (634131).

2^1268261 is an apocalyptic number.

It is an amenable number.

1268261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268261 is an equidigital number, since it uses as much as digits as its factorization.

1268261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 1268261 is about 1126.1709461711. The cubic root of 1268261 is about 108.2437623858.

The spelling of 1268261 in words is "one million, two hundred sixty-eight thousand, two hundred sixty-one".