1129271040 has 216 divisors, whose sum is σ = 3973683168. Its totient is φ = 296017920.

The previous prime is 1129271027. The next prime is 1129271041. The reversal of 1129271040 is 401729211.

It is a junction number, because it is equal to n+sod(n) for n = 1129270995 and 1129271013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129271041) 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 23 ways as a sum of consecutive naturals, for example, 701917 + ... + 703523.

Almost surely, 2^1129271040 is an apocalyptic number.

1129271040 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 1129271040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1986841584).

1129271040 is an abundant number, since it is smaller than the sum of its proper divisors (2844412128).

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

1129271040 is a wasteful number, since it uses less digits than its factorization.

1129271040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695 (or 1678 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1129271040 is about 33604.6282526678. The cubic root of 1129271040 is about 1041.3564155361.

The spelling of 1129271040 in words is "one billion, one hundred twenty-nine million, two hundred seventy-one thousand, forty".