12400403422 has 32 divisors (see below), whose sum is σ = 21335464800. Its totient is φ = 5352950400.

The previous prime is 12400403417. The next prime is 12400403423. The reversal of 12400403422 is 22430400421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12400403393 and 12400403402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400403423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120397 + ... + 198232.

It is an arithmetic number, because the mean of its divisors is an integer number (666733275).

Almost surely, 2^12400403422 is an apocalyptic number.

12400403422 is a deficient number, since it is larger than the sum of its proper divisors (8935061378).

12400403422 is a wasteful number, since it uses less digits than its factorization.

12400403422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318732.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 12400403422 its reverse (22430400421), we get a palindrome (34830803843).

The spelling of 12400403422 in words is "twelve billion, four hundred million, four hundred three thousand, four hundred twenty-two".