1126643 has 16 divisors (see below), whose sum is σ = 1393920. Its totient is φ = 889056.

The previous prime is 1126627. The next prime is 1126649. The reversal of 1126643 is 3466211.

It is a happy number.

It is not a de Polignac number, because 1126643 - 2⁴ = 1126627 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5621 + ... + 5817.

It is an arithmetic number, because the mean of its divisors is an integer number (87120).

2^1126643 is an apocalyptic number.

1126643 is a deficient number, since it is larger than the sum of its proper divisors (267277).

1126643 is a wasteful number, since it uses less digits than its factorization.

1126643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266.

The product of its digits is 864, while the sum is 23.

The square root of 1126643 is about 1061.4344068288. The cubic root of 1126643 is about 104.0547973058.

The spelling of 1126643 in words is "one million, one hundred twenty-six thousand, six hundred forty-three".