128024430349 has 4 divisors (see below), whose sum is σ = 128048909760. Its totient is φ = 127999950940.

The previous prime is 128024430253. The next prime is 128024430353. The reversal of 128024430349 is 943034420821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 943034420821 = 203617 ⋅4631413.

It is a cyclic number.

It is not a de Polignac number, because 128024430349 - 2²⁵ = 127990875917 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 (128024430379) 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, 12231859 + ... + 12242320.

It is an arithmetic number, because the mean of its divisors is an integer number (32012227440).

Almost surely, 2^128024430349 is an apocalyptic number.

It is an amenable number.

128024430349 is a deficient number, since it is larger than the sum of its proper divisors (24479411).

128024430349 is an equidigital number, since it uses as much as digits as its factorization.

128024430349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24479410.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 128024430349 in words is "one hundred twenty-eight billion, twenty-four million, four hundred thirty thousand, three hundred forty-nine".