1279429 has 4 divisors (see below), whose sum is σ = 1282284. Its totient is φ = 1276576.

The previous prime is 1279427. The next prime is 1279457. The reversal of 1279429 is 9249721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9249721 = 13 ⋅711517.

It can be written as a sum of positive squares in 2 ways, for example, as 324900 + 954529 = 570^2 + 977^2 .

It is a cyclic number.

It is not a de Polignac number, because 1279429 - 2¹ = 1279427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1279394 and 1279403.

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 3 ways as a sum of consecutive naturals, for example, 592 + ... + 1705.

It is an arithmetic number, because the mean of its divisors is an integer number (320571).

2^1279429 is an apocalyptic number.

It is an amenable number.

1279429 is a deficient number, since it is larger than the sum of its proper divisors (2855).

1279429 is an equidigital number, since it uses as much as digits as its factorization.

1279429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854.

The product of its digits is 9072, while the sum is 34.

The square root of 1279429 is about 1131.1184730169. The cubic root of 1279429 is about 108.5605571327.

The spelling of 1279429 in words is "one million, two hundred seventy-nine thousand, four hundred twenty-nine".