21410422 has 32 divisors (see below), whose sum is σ = 36126720. Its totient is φ = 9434880.

The previous prime is 21410419. The next prime is 21410423. The reversal of 21410422 is 22401412.

It is a junction number, because it is equal to n+sod(n) for n = 21410396 and 21410405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168523 + ... + 168649.

It is an arithmetic number, because the mean of its divisors is an integer number (1128960).

Almost surely, 2^21410422 is an apocalyptic number.

21410422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21410422 is a deficient number, since it is larger than the sum of its proper divisors (14716298).

21410422 is a wasteful number, since it uses less digits than its factorization.

21410422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 21410422 is about 4627.1397212533. The cubic root of 21410422 is about 277.6781725131.

Adding to 21410422 its reverse (22401412), we get a palindrome (43811834).

The spelling of 21410422 in words is "twenty-one million, four hundred ten thousand, four hundred twenty-two".