1129801 has 4 divisors (see below), whose sum is σ = 1151172. Its totient is φ = 1108432.

The previous prime is 1129789. The next prime is 1129819. The reversal of 1129801 is 1089211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1040400 + 89401 = 1020^2 + 299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129801 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1129801 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1129831) 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, 10606 + ... + 10711.

It is an arithmetic number, because the mean of its divisors is an integer number (287793).

2^1129801 is an apocalyptic number.

It is an amenable number.

1129801 is a deficient number, since it is larger than the sum of its proper divisors (21371).

1129801 is an equidigital number, since it uses as much as digits as its factorization.

1129801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21370.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1129801 is about 1062.9209754257. The cubic root of 1129801 is about 104.1519290795.

The spelling of 1129801 in words is "one million, one hundred twenty-nine thousand, eight hundred one".