21242432414 has 32 divisors (see below), whose sum is σ = 38054914560. Its totient is φ = 8695238112.

The previous prime is 21242432411. The next prime is 21242432429. The reversal of 21242432414 is 41423424212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21242432411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171632 + ... + 268220.

It is an arithmetic number, because the mean of its divisors is an integer number (1189216080).

Almost surely, 2^21242432414 is an apocalyptic number.

21242432414 is a deficient number, since it is larger than the sum of its proper divisors (16812482146).

21242432414 is a wasteful number, since it uses less digits than its factorization.

21242432414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97304.

The product of its digits is 12288, while the sum is 29.

Adding to 21242432414 its reverse (41423424212), we get a palindrome (62665856626).

The spelling of 21242432414 in words is "twenty-one billion, two hundred forty-two million, four hundred thirty-two thousand, four hundred fourteen".