1278107 has 2 divisors, whose sum is σ = 1278108. Its totient is φ = 1278106.

The previous prime is 1278097. The next prime is 1278113. The reversal of 1278107 is 7018721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1278107 - 2¹⁰ = 1277083 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (1278197) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639053 + 639054.

It is an arithmetic number, because the mean of its divisors is an integer number (639054).

2^1278107 is an apocalyptic number.

1278107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1278107 is an equidigital number, since it uses as much as digits as its factorization.

1278107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 1278107 is about 1130.5339446474. The cubic root of 1278107 is about 108.5231533336.

The spelling of 1278107 in words is "one million, two hundred seventy-eight thousand, one hundred seven".