128799124 has 12 divisors (see below), whose sum is σ = 229219200. Its totient is φ = 63307928.

The previous prime is 128799101. The next prime is 128799161. The reversal of 128799124 is 421997821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272644 + ... + 273115.

It is an arithmetic number, because the mean of its divisors is an integer number (19101600).

Almost surely, 2^128799124 is an apocalyptic number.

It is an amenable number.

128799124 is a deficient number, since it is larger than the sum of its proper divisors (100420076).

128799124 is a wasteful number, since it uses less digits than its factorization.

128799124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545822 (or 545820 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 128799124 is about 11348.9701735444. The cubic root of 128799124 is about 505.0150294517.

The spelling of 128799124 in words is "one hundred twenty-eight million, seven hundred ninety-nine thousand, one hundred twenty-four".