1278104 has 8 divisors (see below), whose sum is σ = 2396460. Its totient is φ = 639048.

The previous prime is 1278097. The next prime is 1278107. The reversal of 1278104 is 4018721.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1278104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79874 + ... + 79889.

2^1278104 is an apocalyptic number.

It is an amenable number.

1278104 is a deficient number, since it is larger than the sum of its proper divisors (1118356).

1278104 is a wasteful number, since it uses less digits than its factorization.

1278104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159769 (or 159765 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1278104 is about 1130.5326178399. The cubic root of 1278104 is about 108.5230684243.

The spelling of 1278104 in words is "one million, two hundred seventy-eight thousand, one hundred four".