1279422 has 64 divisors (see below), whose sum is σ = 3168000. Its totient is φ = 381024.

The previous prime is 1279417. The next prime is 1279427. The reversal of 1279422 is 2249721.

It is an interprime number because it is at equal distance from previous prime (1279417) and next prime (1279427).

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (2016) is a multiple of the sum of its prime divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29733 + ... + 29775.

It is an arithmetic number, because the mean of its divisors is an integer number (49500).

2^1279422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1279422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1584000).

1279422 is an abundant number, since it is smaller than the sum of its proper divisors (1888578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1279422 is a wasteful number, since it uses less digits than its factorization.

1279422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 96 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1279422 is about 1131.1153787302. The cubic root of 1279422 is about 108.5603591471.

Subtracting 1279422 from its reverse (2249721), we obtain a cube (970299 = 99³).

The spelling of 1279422 in words is "one million, two hundred seventy-nine thousand, four hundred twenty-two".