1126729 has 4 divisors (see below), whose sum is σ = 1152976. Its totient is φ = 1100484.

The previous prime is 1126711. The next prime is 1126751. The reversal of 1126729 is 9276211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9276211 = 7 ⋅1325173.

It is a cyclic number.

It is not a de Polignac number, because 1126729 - 2¹¹ = 1124681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1126697 and 1126706.

It is not an unprimeable number, because it can be changed into a prime (1126759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13059 + ... + 13144.

It is an arithmetic number, because the mean of its divisors is an integer number (288244).

2^1126729 is an apocalyptic number.

It is an amenable number.

1126729 is a deficient number, since it is larger than the sum of its proper divisors (26247).

1126729 is an equidigital number, since it uses as much as digits as its factorization.

1126729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26246.

The product of its digits is 1512, while the sum is 28.

The square root of 1126729 is about 1061.4749172731. The cubic root of 1126729 is about 104.0574448422.

The spelling of 1126729 in words is "one million, one hundred twenty-six thousand, seven hundred twenty-nine".