12426262421 has 16 divisors (see below), whose sum is σ = 13484649024. Its totient is φ = 11405124864.

The previous prime is 12426262361. The next prime is 12426262427.

12426262421 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12426262421 - 2⁶ = 12426262357 is a prime.

It is a super-3 number, since 3×12426262421³ (a number of 31 digits) contains 333 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 (12426262427) 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 15 ways as a sum of consecutive naturals, for example, 456815 + ... + 483251.

It is an arithmetic number, because the mean of its divisors is an integer number (842790564).

Almost surely, 2^12426262421 is an apocalyptic number.

It is an amenable number.

12426262421 is a deficient number, since it is larger than the sum of its proper divisors (1058386603).

12426262421 is a wasteful number, since it uses less digits than its factorization.

12426262421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27140.

The product of its digits is 18432, while the sum is 32.

The spelling of 12426262421 in words is "twelve billion, four hundred twenty-six million, two hundred sixty-two thousand, four hundred twenty-one".