1278133 has 8 divisors (see below), whose sum is σ = 1357056. Its totient is φ = 1201200.

The previous prime is 1278131. The next prime is 1278139. The reversal of 1278133 is 3318721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1278133 - 2¹ = 1278131 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1278098 and 1278107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278131) 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, 948 + ... + 1858.

It is an arithmetic number, because the mean of its divisors is an integer number (169632).

2^1278133 is an apocalyptic number.

It is an amenable number.

1278133 is a deficient number, since it is larger than the sum of its proper divisors (78923).

1278133 is an equidigital number, since it uses as much as digits as its factorization.

1278133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995.

The product of its digits is 1008, while the sum is 25.

The square root of 1278133 is about 1130.5454435802. The cubic root of 1278133 is about 108.5238892091.

The spelling of 1278133 in words is "one million, two hundred seventy-eight thousand, one hundred thirty-three".