1276243 has 2 divisors, whose sum is σ = 1276244. Its totient is φ = 1276242.

The previous prime is 1276237. The next prime is 1276271. The reversal of 1276243 is 3426721.

It is a weak prime.

It is an emirp because it is prime and its reverse (3426721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1276243 - 2¹³ = 1268051 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1276213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638121 + 638122.

It is an arithmetic number, because the mean of its divisors is an integer number (638122).

2^1276243 is an apocalyptic number.

1276243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276243 is an equidigital number, since it uses as much as digits as its factorization.

1276243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 1276243 is about 1129.7092546315. The cubic root of 1276243 is about 108.4703706958.

The spelling of 1276243 in words is "one million, two hundred seventy-six thousand, two hundred forty-three".