1267879 has 4 divisors (see below), whose sum is σ = 1302184. Its totient is φ = 1233576.

The previous prime is 1267873. The next prime is 1267883. The reversal of 1267879 is 9787621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9787621 = 73 ⋅134077.

It is a cyclic number.

It is not a de Polignac number, because 1267879 - 2¹⁹ = 743591 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267873) 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 in 3 ways as a sum of consecutive naturals, for example, 17097 + ... + 17170.

It is an arithmetic number, because the mean of its divisors is an integer number (325546).

2^1267879 is an apocalyptic number.

1267879 is a deficient number, since it is larger than the sum of its proper divisors (34305).

1267879 is an equidigital number, since it uses as much as digits as its factorization.

1267879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34304.

The product of its digits is 42336, while the sum is 40.

The square root of 1267879 is about 1126.0013321484. The cubic root of 1267879 is about 108.2328936268.

The spelling of 1267879 in words is "one million, two hundred sixty-seven thousand, eight hundred seventy-nine".