21424214302142 has 32 divisors (see below), whose sum is σ = 35533407841344. Its totient is φ = 9636223168000.

The previous prime is 21424214302121. The next prime is 21424214302201. The reversal of 21424214302142 is 24120341242412.

It is a junction number, because it is equal to n+sod(n) for n = 21424214302099 and 21424214302108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9511709 + ... + 11546472.

It is an arithmetic number, because the mean of its divisors is an integer number (1110418995042).

Almost surely, 2^{21424214302142} is an apocalyptic number.

21424214302142 is a deficient number, since it is larger than the sum of its proper divisors (14109193539202).

21424214302142 is a wasteful number, since it uses less digits than its factorization.

21424214302142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21059524.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 21424214302142 its reverse (24120341242412), we get a palindrome (45544555544554).

The spelling of 21424214302142 in words is "twenty-one trillion, four hundred twenty-four billion, two hundred fourteen million, three hundred two thousand, one hundred forty-two".