21383282342 has 4 divisors (see below), whose sum is σ = 32074923516. Its totient is φ = 10691641170.

The previous prime is 21383282341. The next prime is 21383282357. The reversal of 21383282342 is 24328238312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21383282296 and 21383282305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21383282341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5345820584 + ... + 5345820587.

It is an arithmetic number, because the mean of its divisors is an integer number (8018730879).

Almost surely, 2^21383282342 is an apocalyptic number.

21383282342 is a deficient number, since it is larger than the sum of its proper divisors (10691641174).

21383282342 is a wasteful number, since it uses less digits than its factorization.

21383282342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10691641173.

The product of its digits is 110592, while the sum is 38.

The spelling of 21383282342 in words is "twenty-one billion, three hundred eighty-three million, two hundred eighty-two thousand, three hundred forty-two".