1285426 has 8 divisors (see below), whose sum is σ = 2029680. Its totient is φ = 608868.

The previous prime is 1285411. The next prime is 1285429. The reversal of 1285426 is 6245821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1285394 and 1285403.

It is not an unprimeable number, because it can be changed into a prime (1285429) 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, 16876 + ... + 16951.

It is an arithmetic number, because the mean of its divisors is an integer number (253710).

2^1285426 is an apocalyptic number.

1285426 is a deficient number, since it is larger than the sum of its proper divisors (744254).

1285426 is a wasteful number, since it uses less digits than its factorization.

1285426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33848.

The product of its digits is 3840, while the sum is 28.

The square root of 1285426 is about 1133.7662898499. The cubic root of 1285426 is about 108.7299095313.

It can be divided in two parts, 12854 and 26, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 1285426 in words is "one million, two hundred eighty-five thousand, four hundred twenty-six".