1128129406 has 16 divisors (see below), whose sum is σ = 1754071200. Its totient is φ = 543517408.

The previous prime is 1128129397. The next prime is 1128129407. The reversal of 1128129406 is 6049218211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128129407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9840 + ... + 48508.

It is an arithmetic number, because the mean of its divisors is an integer number (109629450).

Almost surely, 2^1128129406 is an apocalyptic number.

1128129406 is a deficient number, since it is larger than the sum of its proper divisors (625941794).

1128129406 is a wasteful number, since it uses less digits than its factorization.

1128129406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39203.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1128129406 is about 33587.6376960333. The cubic root of 1128129406 is about 1041.0053782462.

The spelling of 1128129406 in words is "one billion, one hundred twenty-eight million, one hundred twenty-nine thousand, four hundred six".