21303636142 has 8 divisors (see below), whose sum is σ = 32122760832. Its totient is φ = 10596049200.

The previous prime is 21303636119. The next prime is 21303636143. The reversal of 21303636142 is 24163630312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303636143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27883959 + ... + 27884722.

It is an arithmetic number, because the mean of its divisors is an integer number (4015345104).

Almost surely, 2^21303636142 is an apocalyptic number.

21303636142 is a deficient number, since it is larger than the sum of its proper divisors (10819124690).

21303636142 is a wasteful number, since it uses less digits than its factorization.

21303636142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55768874.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 21303636142 in words is "twenty-one billion, three hundred three million, six hundred thirty-six thousand, one hundred forty-two".