128244142069 has 8 divisors (see below), whose sum is σ = 128607909440. Its totient is φ = 127880881056.

The previous prime is 128244142063. The next prime is 128244142151. The reversal of 128244142069 is 960241442821.

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 128244142069 - 2¹¹ = 128244140021 is a prime.

It is a super-2 number, since 2×128244142069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128244142063) 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, 383569 + ... + 635305.

It is an arithmetic number, because the mean of its divisors is an integer number (16075988680).

Almost surely, 2^128244142069 is an apocalyptic number.

It is an amenable number.

128244142069 is a deficient number, since it is larger than the sum of its proper divisors (363767371).

128244142069 is an equidigital number, since it uses as much as digits as its factorization.

128244142069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253179.

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 128244142069 in words is "one hundred twenty-eight billion, two hundred forty-four million, one hundred forty-two thousand, sixty-nine".