1278941 has 4 divisors (see below), whose sum is σ = 1282272. Its totient is φ = 1275612.

The previous prime is 1278911. The next prime is 1278983. The reversal of 1278941 is 1498721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1278941 - 2¹⁴ = 1262557 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1278898 and 1278907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001 + ... + 1886.

It is an arithmetic number, because the mean of its divisors is an integer number (320568).

2^1278941 is an apocalyptic number.

It is an amenable number.

1278941 is a deficient number, since it is larger than the sum of its proper divisors (3331).

1278941 is an equidigital number, since it uses as much as digits as its factorization.

1278941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330.

The product of its digits is 4032, while the sum is 32.

The square root of 1278941 is about 1130.9027367550. The cubic root of 1278941 is about 108.5467529828.

The spelling of 1278941 in words is "one million, two hundred seventy-eight thousand, nine hundred forty-one".