1278701 has 2 divisors, whose sum is σ = 1278702. Its totient is φ = 1278700.

The previous prime is 1278671. The next prime is 1278709. The reversal of 1278701 is 1078721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1188100 + 90601 = 1090^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 1278701 - 2⁶ = 1278637 is a prime.

It is a Chen prime.

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

It is equal to p₉₈₅₁₃ and since 1278701 and 98513 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1278709) 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, 639350 + 639351.

It is an arithmetic number, because the mean of its divisors is an integer number (639351).

2^1278701 is an apocalyptic number.

It is an amenable number.

1278701 is a deficient number, since it is larger than the sum of its proper divisors (1).

1278701 is an equidigital number, since it uses as much as digits as its factorization.

1278701 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 1278701 is about 1130.7966218556. The cubic root of 1278701 is about 108.5399627685.

The spelling of 1278701 in words is "one million, two hundred seventy-eight thousand, seven hundred one".