1126905729 has 8 divisors (see below), whose sum is σ = 1503006432. Its totient is φ = 751037760.

The previous prime is 1126905727. The next prime is 1126905733. The reversal of 1126905729 is 9275096211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1126905729 - 2¹ = 1126905727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1126905727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46552 + ... + 66489.

It is an arithmetic number, because the mean of its divisors is an integer number (187875804).

Almost surely, 2^1126905729 is an apocalyptic number.

It is an amenable number.

1126905729 is a deficient number, since it is larger than the sum of its proper divisors (376100703).

1126905729 is a wasteful number, since it uses less digits than its factorization.

1126905729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116367.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 1126905729 is about 33569.4165722313. The cubic root of 1126905729 is about 1040.6288507572.

The spelling of 1126905729 in words is "one billion, one hundred twenty-six million, nine hundred five thousand, seven hundred twenty-nine".