1266426 has 72 divisors (see below), whose sum is σ = 3450720. Its totient is φ = 327888.

The previous prime is 1266413. The next prime is 1266431. The reversal of 1266426 is 6246621.

1266426 = T₃₆ + T₃₇ + ... + T₁₉₆.

It is a happy number.

1266426 is a `hidden beast` number, since 12 + 6 + 642 + 6 = 666.

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

Its product of digits (3456) is a multiple of the sum of its prime divisors (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1266426.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55051 + ... + 55073.

2^1266426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725360).

1266426 is an abundant number, since it is smaller than the sum of its proper divisors (2184294).

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

1266426 is a wasteful number, since it uses less digits than its factorization.

1266426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 54 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1266426 is about 1125.3559436907. The cubic root of 1266426 is about 108.1915325539.

The spelling of 1266426 in words is "one million, two hundred sixty-six thousand, four hundred twenty-six".