12451424402 has 4 divisors (see below), whose sum is σ = 18677136606. Its totient is φ = 6225712200.

The previous prime is 12451424389. The next prime is 12451424407. The reversal of 12451424402 is 20442415421.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 11653418401 + 798006001 = 107951^2 + 28249^2 .

It is not an unprimeable number, because it can be changed into a prime (12451424407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3112856099 + ... + 3112856102.

Almost surely, 2^12451424402 is an apocalyptic number.

12451424402 is a deficient number, since it is larger than the sum of its proper divisors (6225712204).

12451424402 is an equidigital number, since it uses as much as digits as its factorization.

12451424402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6225712203.

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 12451424402 its reverse (20442415421), we get a palindrome (32893839823).

The spelling of 12451424402 in words is "twelve billion, four hundred fifty-one million, four hundred twenty-four thousand, four hundred two".