12426451 has 4 divisors (see below), whose sum is σ = 12510000. Its totient is φ = 12342904.

The previous prime is 12426431. The next prime is 12426481. The reversal of 12426451 is 15462421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15462421 = 13 ⋅1189417.

It is a cyclic number.

It is not a de Polignac number, because 12426451 - 2⁹ = 12425939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12426431) 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, 41551 + ... + 41848.

It is an arithmetic number, because the mean of its divisors is an integer number (3127500).

Almost surely, 2^12426451 is an apocalyptic number.

12426451 is a deficient number, since it is larger than the sum of its proper divisors (83549).

12426451 is an equidigital number, since it uses as much as digits as its factorization.

12426451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83548.

The product of its digits is 1920, while the sum is 25.

The square root of 12426451 is about 3525.1171611735. The cubic root of 12426451 is about 231.6233670492.

Adding to 12426451 its reverse (15462421), we get a palindrome (27888872).

The spelling of 12426451 in words is "twelve million, four hundred twenty-six thousand, four hundred fifty-one".