21142412432 has 20 divisors (see below), whose sum is σ = 41035181616. Its totient is φ = 10552688160.

The previous prime is 21142412413. The next prime is 21142412441. The reversal of 21142412432 is 23421424112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147958 + ... + 1166229.

Almost surely, 2^21142412432 is an apocalyptic number.

It is an amenable number.

21142412432 is a deficient number, since it is larger than the sum of its proper divisors (19892769184).

21142412432 is a wasteful number, since it uses less digits than its factorization.

21142412432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314766 (or 2314760 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 21142412432 its reverse (23421424112), we get a palindrome (44563836544).

The spelling of 21142412432 in words is "twenty-one billion, one hundred forty-two million, four hundred twelve thousand, four hundred thirty-two".