12424402 has 4 divisors (see below), whose sum is σ = 18636606. Its totient is φ = 6212200.

The previous prime is 12424387. The next prime is 12424427. The reversal of 12424402 is 20442421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20442421 = 1667 ⋅12263.

It can be written as a sum of positive squares in only one way, i.e., 10962721 + 1461681 = 3311^2 + 1209^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12424402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3106099 + ... + 3106102.

Almost surely, 2^12424402 is an apocalyptic number.

12424402 is a deficient number, since it is larger than the sum of its proper divisors (6212204).

12424402 is an equidigital number, since it uses as much as digits as its factorization.

12424402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6212203.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 12424402 is about 3524.8265205539. The cubic root of 12424402 is about 231.6106355416.

Adding to 12424402 its reverse (20442421), we get a palindrome (32866823).

The spelling of 12424402 in words is "twelve million, four hundred twenty-four thousand, four hundred two".