21432132342 has 48 divisors (see below), whose sum is σ = 47226619440. Its totient is φ = 7023096576.

The previous prime is 21432132331. The next prime is 21432132383. The reversal of 21432132342 is 24323123412.

21432132342 is a `hidden beast` number, since 2 + 14 + 321 + 323 + 4 + 2 = 666.

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, 376834 + ... + 429962.

It is an arithmetic number, because the mean of its divisors is an integer number (983887905).

Almost surely, 2^21432132342 is an apocalyptic number.

21432132342 is an abundant number, since it is smaller than the sum of its proper divisors (25794487098).

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

21432132342 is a wasteful number, since it uses less digits than its factorization.

21432132342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53517 (or 53514 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 21432132342 its reverse (24323123412), we get a palindrome (45755255754).

The spelling of 21432132342 in words is "twenty-one billion, four hundred thirty-two million, one hundred thirty-two thousand, three hundred forty-two".