21330605642042 has 8 divisors (see below), whose sum is σ = 31998451289376. Its totient is φ = 10664455212252.

The previous prime is 21330605642009. The next prime is 21330605642111. The reversal of 21330605642042 is 24024650603312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21330605641987 and 21330605642005.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423772928 + ... + 423823259.

It is an arithmetic number, because the mean of its divisors is an integer number (3999806411172).

Almost surely, 2^{21330605642042} is an apocalyptic number.

21330605642042 is a deficient number, since it is larger than the sum of its proper divisors (10667845647334).

21330605642042 is a wasteful number, since it uses less digits than its factorization.

21330605642042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847608772.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 21330605642042 in words is "twenty-one trillion, three hundred thirty billion, six hundred five million, six hundred forty-two thousand, forty-two".