1199104128 has 64 divisors (see below), whose sum is σ = 3539032800. Its totient is φ = 399700224.

The previous prime is 1199104099. The next prime is 1199104139. The reversal of 1199104128 is 8214019911.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1199104092 and 1199104101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170026 + ... + 176937.

Almost surely, 2^1199104128 is an apocalyptic number.

1199104128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1199104128 is an abundant number, since it is smaller than the sum of its proper divisors (2339928672).

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

1199104128 is an equidigital number, since it uses as much as digits as its factorization.

1199104128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346986 (or 346968 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 1199104128 is about 34628.0829385630. The cubic root of 1199104128 is about 1062.3940572199.

The spelling of 1199104128 in words is "one billion, one hundred ninety-nine million, one hundred four thousand, one hundred twenty-eight".