128803061 has 4 divisors (see below), whose sum is σ = 129268332. Its totient is φ = 128337792.

The previous prime is 128803027. The next prime is 128803079. The reversal of 128803061 is 160308821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160308821 = 571 ⋅280751.

It can be written as a sum of positive squares in 2 ways, for example, as 65918161 + 62884900 = 8119^2 + 7930^2 .

It is a cyclic number.

It is not a de Polignac number, because 128803061 - 2¹⁸ = 128540917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128803001) 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, 232220 + ... + 232773.

It is an arithmetic number, because the mean of its divisors is an integer number (32317083).

Almost surely, 2^128803061 is an apocalyptic number.

It is an amenable number.

128803061 is a deficient number, since it is larger than the sum of its proper divisors (465271).

128803061 is an equidigital number, since it uses as much as digits as its factorization.

128803061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465270.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 128803061 is about 11349.1436240802. The cubic root of 128803061 is about 505.0201749937.

The spelling of 128803061 in words is "one hundred twenty-eight million, eight hundred three thousand, sixty-one".