130128879 has 24 divisors (see below), whose sum is σ = 181392640. Its totient is φ = 82922112.

The previous prime is 130128877. The next prime is 130128893. The reversal of 130128879 is 978821031.

It is not a de Polignac number, because 130128879 - 2¹ = 130128877 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 (130128877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1151527 + ... + 1151639.

Almost surely, 2^130128879 is an apocalyptic number.

130128879 is a deficient number, since it is larger than the sum of its proper divisors (51263761).

130128879 is an equidigital number, since it uses as much as digits as its factorization.

130128879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 130128879 is about 11407.4045689631. The cubic root of 130128879 is about 506.7470504292.

The spelling of 130128879 in words is "one hundred thirty million, one hundred twenty-eight thousand, eight hundred seventy-nine".