128114139 has 8 divisors (see below), whose sum is σ = 171016272. Its totient is φ = 85310720.

The previous prime is 128114123. The next prime is 128114149. The reversal of 128114139 is 931411821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128114139 - 2⁴ = 128114123 is a prime.

It is a super-2 number, since 2×128114139² = 32826465223422642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128114149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21594 + ... + 26879.

It is an arithmetic number, because the mean of its divisors is an integer number (21377034).

Almost surely, 2^128114139 is an apocalyptic number.

128114139 is a deficient number, since it is larger than the sum of its proper divisors (42902133).

128114139 is an equidigital number, since it uses as much as digits as its factorization.

128114139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49357.

The product of its digits is 1728, while the sum is 30.

The square root of 128114139 is about 11318.7516537823. The cubic root of 128114139 is about 504.1181735052.

The spelling of 128114139 in words is "one hundred twenty-eight million, one hundred fourteen thousand, one hundred thirty-nine".