1266044 has 24 divisors (see below), whose sum is σ = 2420208. Its totient is φ = 576000.

The previous prime is 1266043. The next prime is 1266047. The reversal of 1266044 is 4406621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266043) 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 7 ways as a sum of consecutive naturals, for example, 4919 + ... + 5169.

It is an arithmetic number, because the mean of its divisors is an integer number (100842).

2^1266044 is an apocalyptic number.

It is an amenable number.

1266044 is a deficient number, since it is larger than the sum of its proper divisors (1154164).

1266044 is a wasteful number, since it uses less digits than its factorization.

1266044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1266044 is about 1125.1862068120. The cubic root of 1266044 is about 108.1806532969.

It can be divided in two parts, 12660 and 44, that multiplied together give a triangular number (557040 = T₁₀₅₅).

The spelling of 1266044 in words is "one million, two hundred sixty-six thousand, forty-four".