21342430102 has 48 divisors (see below), whose sum is σ = 37625176512. Its totient is φ = 9052722000.

The previous prime is 21342430033. The next prime is 21342430121. The reversal of 21342430102 is 20103424312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4006813 + ... + 4012135.

It is an arithmetic number, because the mean of its divisors is an integer number (783857844).

Almost surely, 2^21342430102 is an apocalyptic number.

21342430102 is a deficient number, since it is larger than the sum of its proper divisors (16282746410).

21342430102 is a wasteful number, since it uses less digits than its factorization.

21342430102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5753 (or 5746 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21342430102 its reverse (20103424312), we get a palindrome (41445854414).

The spelling of 21342430102 in words is "twenty-one billion, three hundred forty-two million, four hundred thirty thousand, one hundred two".