128145023 has 8 divisors (see below), whose sum is σ = 131980992. Its totient is φ = 124328736.

The previous prime is 128145011. The next prime is 128145053. The reversal of 128145023 is 320541821.

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 128145023 - 2⁴ = 128145007 is a prime.

It is a super-2 number, since 2×128145023² = 32842293839341058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128144983 and 128145001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128145053) 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, 8861 + ... + 18297.

It is an arithmetic number, because the mean of its divisors is an integer number (16497624).

Almost surely, 2^128145023 is an apocalyptic number.

128145023 is a deficient number, since it is larger than the sum of its proper divisors (3835969).

128145023 is an equidigital number, since it uses as much as digits as its factorization.

128145023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9841.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 128145023 is about 11320.1158562976. The cubic root of 128145023 is about 504.1586788829.

Adding to 128145023 its reverse (320541821), we get a palindrome (448686844).

The spelling of 128145023 in words is "one hundred twenty-eight million, one hundred forty-five thousand, twenty-three".