128136083 has 4 divisors (see below), whose sum is σ = 128876928. Its totient is φ = 127395240.

The previous prime is 128136049. The next prime is 128136091. The reversal of 128136083 is 380631821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128136083 - 2¹² = 128131987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128136383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370163 + ... + 370508.

It is an arithmetic number, because the mean of its divisors is an integer number (32219232).

Almost surely, 2^128136083 is an apocalyptic number.

128136083 is a deficient number, since it is larger than the sum of its proper divisors (740845).

128136083 is an equidigital number, since it uses as much as digits as its factorization.

128136083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740844.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 128136083 is about 11319.7209771266. The cubic root of 128136083 is about 504.1469544494.

The spelling of 128136083 in words is "one hundred twenty-eight million, one hundred thirty-six thousand, eighty-three".