100405423422 has 16 divisors (see below), whose sum is σ = 223123163280. Its totient is φ = 33468474456.

The previous prime is 100405423399. The next prime is 100405423423. The reversal of 100405423422 is 224324504001.

100405423422 is a `hidden beast` number, since 1 + 0 + 0 + 405 + 4 + 234 + 22 = 666.

It is a super-2 number, since 2×100405423422² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100405423423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929679793 + ... + 929679900.

It is an arithmetic number, because the mean of its divisors is an integer number (13945197705).

Almost surely, 2^100405423422 is an apocalyptic number.

100405423422 is an abundant number, since it is smaller than the sum of its proper divisors (122717739858).

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

100405423422 is a wasteful number, since it uses less digits than its factorization.

100405423422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859359704 (or 1859359698 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 100405423422 its reverse (224324504001), we get a palindrome (324729927423).

The spelling of 100405423422 in words is "one hundred billion, four hundred five million, four hundred twenty-three thousand, four hundred twenty-two".