1278801 has 8 divisors (see below), whose sum is σ = 1894560. Its totient is φ = 852516.

The previous prime is 1278799. The next prime is 1278803. The reversal of 1278801 is 1088721.

It is an interprime number because it is at equal distance from previous prime (1278799) and next prime (1278803).

It is not a de Polignac number, because 1278801 - 2¹ = 1278799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 47363 = 1278801 / (1 + 2 + 7 + 8 + 8 + 0 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1278803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23655 + ... + 23708.

It is an arithmetic number, because the mean of its divisors is an integer number (236820).

2^1278801 is an apocalyptic number.

It is an amenable number.

1278801 is a deficient number, since it is larger than the sum of its proper divisors (615759).

1278801 is an equidigital number, since it uses as much as digits as its factorization.

1278801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47372 (or 47366 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 1278801 is about 1130.8408376071. The cubic root of 1278801 is about 108.5427921277.

The spelling of 1278801 in words is "one million, two hundred seventy-eight thousand, eight hundred one".