1278007 has 2 divisors, whose sum is σ = 1278008. Its totient is φ = 1278006.

The previous prime is 1277993. The next prime is 1278029. The reversal of 1278007 is 7008721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1278007 - 2⁷ = 1277879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1278047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639003 + 639004.

It is an arithmetic number, because the mean of its divisors is an integer number (639004).

2^1278007 is an apocalyptic number.

1278007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1278007 is an equidigital number, since it uses as much as digits as its factorization.

1278007 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 25.

The square root of 1278007 is about 1130.4897168926. The cubic root of 1278007 is about 108.5203229502.

The spelling of 1278007 in words is "one million, two hundred seventy-eight thousand, seven".