21410422242 has 32 divisors (see below), whose sum is σ = 48220545024. Its totient is φ = 6278715600.

The previous prime is 21410422177. The next prime is 21410422283. The reversal of 21410422242 is 24222401412.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5230218 + ... + 5234309.

It is an arithmetic number, because the mean of its divisors is an integer number (1506892032).

Almost surely, 2^21410422242 is an apocalyptic number.

21410422242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21410422242 is an abundant number, since it is smaller than the sum of its proper divisors (26810122782).

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

21410422242 is a wasteful number, since it uses less digits than its factorization.

21410422242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10464574.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 21410422242 its reverse (24222401412), we get a palindrome (45632823654).

The spelling of 21410422242 in words is "twenty-one billion, four hundred ten million, four hundred twenty-two thousand, two hundred forty-two".