21002350342 has 8 divisors (see below), whose sum is σ = 31809385296. Its totient is φ = 10399221912.

The previous prime is 21002350331. The next prime is 21002350349. The reversal of 21002350342 is 24305320012.

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 (21002350349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50976373 + ... + 50976784.

It is an arithmetic number, because the mean of its divisors is an integer number (3976173162).

Almost surely, 2^21002350342 is an apocalyptic number.

21002350342 is a deficient number, since it is larger than the sum of its proper divisors (10807034954).

21002350342 is a wasteful number, since it uses less digits than its factorization.

21002350342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101953262.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 21002350342 its reverse (24305320012), we get a palindrome (45307670354).

The spelling of 21002350342 in words is "twenty-one billion, two million, three hundred fifty thousand, three hundred forty-two".