1286424 has 48 divisors (see below), whose sum is σ = 3692520. Its totient is φ = 403200.

The previous prime is 1286419. The next prime is 1286447. The reversal of 1286424 is 4246821.

1286424 is a `hidden beast` number, since 12 + 8 + 642 + 4 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 699 + ... + 1749.

2^1286424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1286424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846260).

1286424 is an abundant number, since it is smaller than the sum of its proper divisors (2406096).

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

1286424 is a wasteful number, since it uses less digits than its factorization.

1286424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080 (or 1073 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1286424 is about 1134.2063304355. The cubic root of 1286424 is about 108.7580414188.

It can be divided in two parts, 12 and 86424, that added together give a square (86436 = 294²).

The spelling of 1286424 in words is "one million, two hundred eighty-six thousand, four hundred twenty-four".