4123128463 has 4 divisors (see below), whose sum is σ = 4165635040. Its totient is φ = 4080621888.

The previous prime is 4123128461. The next prime is 4123128467. The reversal of 4123128463 is 3648213214.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4123128463 - 2¹ = 4123128461 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 (4123128461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21253143 + ... + 21253336.

It is an arithmetic number, because the mean of its divisors is an integer number (1041408760).

Almost surely, 2^4123128463 is an apocalyptic number.

4123128463 is a deficient number, since it is larger than the sum of its proper divisors (42506577).

4123128463 is an equidigital number, since it uses as much as digits as its factorization.

4123128463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42506576.

The product of its digits is 27648, while the sum is 34.

The square root of 4123128463 is about 64211.5913445540. The cubic root of 4123128463 is about 1603.5245820777.

The spelling of 4123128463 in words is "four billion, one hundred twenty-three million, one hundred twenty-eight thousand, four hundred sixty-three".