1171129 has 4 divisors (see below), whose sum is σ = 1173376. Its totient is φ = 1168884.

The previous prime is 1171123. The next prime is 1171133. The reversal of 1171129 is 9211711.

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.

It is a cyclic number.

It is not a de Polignac number, because 1171129 - 2¹¹ = 1169081 is a prime.

It is a Duffinian number.

1171129 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1171123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112 + ... + 1534.

It is an arithmetic number, because the mean of its divisors is an integer number (293344).

2^1171129 is an apocalyptic number.

It is an amenable number.

1171129 is a deficient number, since it is larger than the sum of its proper divisors (2247).

1171129 is an equidigital number, since it uses as much as digits as its factorization.

1171129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246.

The product of its digits is 126, while the sum is 22.

The square root of 1171129 is about 1082.1871372364. The cubic root of 1171129 is about 105.4067068310.

The spelling of 1171129 in words is "one million, one hundred seventy-one thousand, one hundred twenty-nine".