12004426427 has 16 divisors (see below), whose sum is σ = 14531622912. Its totient is φ = 9680737920.

The previous prime is 12004426411. The next prime is 12004426429. The reversal of 12004426427 is 72462440021.

It is not a de Polignac number, because 12004426427 - 2⁴ = 12004426411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12004426393 and 12004426402.

It is not an unprimeable number, because it can be changed into a prime (12004426429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341558 + ... + 375060.

It is an arithmetic number, because the mean of its divisors is an integer number (908226432).

Almost surely, 2^12004426427 is an apocalyptic number.

12004426427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12004426427 is a deficient number, since it is larger than the sum of its proper divisors (2527196485).

12004426427 is a wasteful number, since it uses less digits than its factorization.

12004426427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36538.

The product of its (nonzero) digits is 21504, while the sum is 32.

Adding to 12004426427 its reverse (72462440021), we get a palindrome (84466866448).

The spelling of 12004426427 in words is "twelve billion, four million, four hundred twenty-six thousand, four hundred twenty-seven".