105421423412 has 24 divisors (see below), whose sum is σ = 185198173440. Its totient is φ = 52507752480.

The previous prime is 105421423399. The next prime is 105421423453. The reversal of 105421423412 is 214324124501.

It is a happy number.

It is a super-2 number, since 2×105421423412² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6008789 + ... + 6026307.

It is an arithmetic number, because the mean of its divisors is an integer number (7716590560).

Almost surely, 2^105421423412 is an apocalyptic number.

It is an amenable number.

105421423412 is a deficient number, since it is larger than the sum of its proper divisors (79776750028).

105421423412 is a wasteful number, since it uses less digits than its factorization.

105421423412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23231 (or 23229 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 105421423412 its reverse (214324124501), we get a palindrome (319745547913).

The spelling of 105421423412 in words is "one hundred five billion, four hundred twenty-one million, four hundred twenty-three thousand, four hundred twelve".