21302242134 has 32 divisors (see below), whose sum is σ = 42769956960. Its totient is φ = 7073202432.

The previous prime is 21302242127. The next prime is 21302242163. The reversal of 21302242134 is 43124220312.

It is a happy number.

It is a congruent 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, 3331012 + ... + 3337400.

It is an arithmetic number, because the mean of its divisors is an integer number (1336561155).

Almost surely, 2^21302242134 is an apocalyptic number.

21302242134 is an abundant number, since it is smaller than the sum of its proper divisors (21467714826).

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

21302242134 is a wasteful number, since it uses less digits than its factorization.

21302242134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8464.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21302242134 its reverse (43124220312), we get a palindrome (64426462446).

The spelling of 21302242134 in words is "twenty-one billion, three hundred two million, two hundred forty-two thousand, one hundred thirty-four".