1279724 has 6 divisors (see below), whose sum is σ = 2239524. Its totient is φ = 639860.

The previous prime is 1279703. The next prime is 1279727. The reversal of 1279724 is 4279721.

Added to its reverse (4279721) it gives a triangular number (5559445 = T₃₃₃₄).

It is not an unprimeable number, because it can be changed into a prime (1279727) 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 as a sum of consecutive naturals, namely, 159962 + ... + 159969.

It is an arithmetic number, because the mean of its divisors is an integer number (373254).

2^1279724 is an apocalyptic number.

It is an amenable number.

1279724 is a deficient number, since it is larger than the sum of its proper divisors (959800).

1279724 is a wasteful number, since it uses less digits than its factorization.

1279724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319935 (or 319933 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 1279724 is about 1131.2488674027. The cubic root of 1279724 is about 108.5689001522.

Adding to 1279724 its reverse (4279721), we get a triangular number (5559445 = T₃₃₃₄).

It can be divided in two parts, 12797 and 24, that added together give a palindrome (12821).

The spelling of 1279724 in words is "one million, two hundred seventy-nine thousand, seven hundred twenty-four".