13422421428 has 36 divisors (see below), whose sum is σ = 33913460448. Its totient is φ = 4129975200.

The previous prime is 13422421373. The next prime is 13422421487. The reversal of 13422421428 is 82412422431.

It is a happy number.

It is a super-2 number, since 2×13422421428² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3307248 + ... + 3311303.

It is an arithmetic number, because the mean of its divisors is an integer number (942040568).

Almost surely, 2^13422421428 is an apocalyptic number.

It is an amenable number.

13422421428 is an abundant number, since it is smaller than the sum of its proper divisors (20491039020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13422421428 is a wasteful number, since it uses less digits than its factorization.

13422421428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6618584 (or 6618569 counting only the distinct ones).

The product of its digits is 24576, while the sum is 33.

Adding to 13422421428 its reverse (82412422431), we get a palindrome (95834843859).

The spelling of 13422421428 in words is "thirteen billion, four hundred twenty-two million, four hundred twenty-one thousand, four hundred twenty-eight".