12402005422 has 16 divisors (see below), whose sum is σ = 18942819840. Its totient is φ = 6088739328.

The previous prime is 12402005387. The next prime is 12402005471. The reversal of 12402005422 is 22450020421.

It is a junction number, because it is equal to n+sod(n) for n = 12402005393 and 12402005402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227047 + ... + 276322.

It is an arithmetic number, because the mean of its divisors is an integer number (1183926240).

Almost surely, 2^12402005422 is an apocalyptic number.

12402005422 is a deficient number, since it is larger than the sum of its proper divisors (6540814418).

12402005422 is a wasteful number, since it uses less digits than its factorization.

12402005422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503595.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 12402005422 its reverse (22450020421), we get a palindrome (34852025843).

The spelling of 12402005422 in words is "twelve billion, four hundred two million, five thousand, four hundred twenty-two".