1204117128 has 48 divisors (see below), whose sum is σ = 3366355200. Its totient is φ = 388424160.

The previous prime is 1204117093. The next prime is 1204117139. The reversal of 1204117128 is 8217114021.

1204117128 is a `hidden beast` number, since 120 + 411 + 7 + 128 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267508 + ... + 271971.

It is an arithmetic number, because the mean of its divisors is an integer number (70132400).

Almost surely, 2^1204117128 is an apocalyptic number.

1204117128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1204117128 is an abundant number, since it is smaller than the sum of its proper divisors (2162238072).

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

1204117128 is a wasteful number, since it uses less digits than its factorization.

1204117128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539522 (or 539515 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 1204117128 is about 34700.3908911701. The cubic root of 1204117128 is about 1063.8724878757.

The spelling of 1204117128 in words is "one billion, two hundred four million, one hundred seventeen thousand, one hundred twenty-eight".