12402322 has 4 divisors (see below), whose sum is σ = 18603486. Its totient is φ = 6201160.

The previous prime is 12402311. The next prime is 12402349. The reversal of 12402322 is 22320421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22320421 = 19 ⋅1174759.

It can be written as a sum of positive squares in only one way, i.e., 11978521 + 423801 = 3461^2 + 651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12402296 and 12402305.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3100579 + ... + 3100582.

Almost surely, 2^12402322 is an apocalyptic number.

12402322 is a deficient number, since it is larger than the sum of its proper divisors (6201164).

12402322 is an equidigital number, since it uses as much as digits as its factorization.

12402322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6201163.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 12402322 is about 3521.6930587432. The cubic root of 12402322 is about 231.4733520664.

Adding to 12402322 its reverse (22320421), we get a palindrome (34722743).

The spelling of 12402322 in words is "twelve million, four hundred two thousand, three hundred twenty-two".