1129180 has 48 divisors (see below), whose sum is σ = 2638944. Its totient is φ = 403200.

The previous prime is 1129169. The next prime is 1129187. The reversal of 1129180 is 819211.

1129180 is nontrivially palindromic in base 12.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129187) 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 15 ways as a sum of consecutive naturals, for example, 11130 + ... + 11230.

It is an arithmetic number, because the mean of its divisors is an integer number (54978).

2^1129180 is an apocalyptic number.

1129180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1129180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319472).

1129180 is an abundant number, since it is smaller than the sum of its proper divisors (1509764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1129180 is a wasteful number, since it uses less digits than its factorization.

1129180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 164 counting only the distinct ones).

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

The square root of 1129180 is about 1062.6288157207. The cubic root of 1129180 is about 104.1328430629.

The spelling of 1129180 in words is "one million, one hundred twenty-nine thousand, one hundred eighty".